The choice of mining method is to select the best mining method suitable for the deposit based on the geological and mining technical conditions of a specific deposit. The mining method design is based on the selected mining method, and the design and construction design of a specific mine sound. The correct choice of mining methods has an extremely important role in mine production. Because it determines the production layout of the mine, the production process of the ore, the materials used, the equipment, the productivity of the labor, the recovery of the resources, the quality of the ore produced, the cost of mining, the safety of production, and the subsequent cost of mineral processing and smelting, etc. Once the mining method is selected, the construction period is very long, the impact surface is very wide , and if it is changed afterwards , it will cause a lot of waste , and even delay or interrupt the mine production. Choosing a mining method is a rather complicated and very prudent job. On the one hand, we must consider the various factors affecting the choice of mining methods, including some technical policy issues; on the other hand, we must conduct laboratory and on-site tests on some major process parameters, or draw on actual data from similar mines. Therefore, this work must have fairly skilled experience in specific practice, otherwise the method chosen will often have certain limitations. In the production practice, there are also changes in the choice of mining methods. This is because (1) the geological data provided for selection does not meet the requirements; (2) the whole process of mining method selection is not enough, not Research geological data, selection of mining methods, infrastructure construction, mining method test, trial production, production and other procedures, do a good planning; \ 3) the introduction of the process, equipment, 1 lack of systematic testing, reflecting unrealistic; (4) The need for updating due to technological advancement. Therefore, the fundamental issue is to fully study all the factors that influence the choice of mining methods. To choose the correct and reasonable mining method, the following requirements must be met : 1. Production safety means that the selected mining method can not only ensure the safety of workers in the daily mining process, but also timely evacuate the operation area when the accident occurs, and also ensure various underground equipment and basic wells. Drainage chambers or structures are not subject to crushing activities and other disasters. The occurrence of historical safety accidents does not depend entirely on the objective geological conditions of the deposits, but rather on whether the subjective method can correctly select the mining method and its key structural parameters, that is, whether the unfavorable conditions can be changed into favorable conditions. 2. Reasonable mining intensity It is premised on meeting the country's needs for ore production. The mining intensity is large. The timely acquisition of more minerals is very beneficial to the ground pressure management and mine safety production, but the mine service life is shortened and the equipment depreciation expenses are increased, which will also have an adverse impact on the overall economic benefits. Weighing these advantages and disadvantages, we can think that reasonable mining intensity must be compatible with the production scale of the mine. If the production scale is large, a large-area and high-efficiency mining method can be obtained. On the other hand, the mining capacity of different mining methods is different, and the number of nuggets that may be arranged in the stage is also different. When the scale of production is determined, the number of stages of simultaneous mining will change. From the perspective of facilitating production management, the design usually uses one stage of recovery to meet the production requirements as the basis for selecting the mining method, so as to verify the size of the production scale. 3. Economic Benefits The economic benefits of high mining can be reflected in mining costs, production efficiency, energy consumption, material consumption, ore loss and depletion. Improving economic efficiency is a prerequisite for making enterprises profitable. To reduce mining costs, measures are to develop mechanized operations and improve the level of mechanization. Only by relying on comprehensive mechanization can we further increase labor productivity. At the same time, we must improve the process, strengthen management, and take effective measures to reduce energy and material consumption. And all this must be guaranteed by a compatible mining method. Mineral resources are limited and cannot be regenerated. The selected mining method must be able to take full advantage of a useful component in the ore, ore grade ore and increase the recovery rate of ore associated rare precious metals as possible while reducing the dilution rate. For minerals with special requirements, the possibility of separation and sorting should be considered. Increasing the ore recovery rate and reducing the depletion rate can not only increase mining revenue for the mining sector, but also meet the needs of the ore quality of the processing and processing sector. The depletion rate will increase and the beneficiation recovery rate will drop significantly. Table 1-1 provides recommended indicators for loss and depletion of various mining methods. 4. The mature and reliable process should be a mature example and effective. New design schemes or methods that refer to external methods must pass system tests and obtain data to find out the specific laws that are suitable for the mine. Equipment must also be used reliably. The main technical and economic indicators should generally leave room for sufficiency, making it possible to adjust according to process development, technological progress, and adjustment. 5. In line with national regulations, China has successively promulgated some protection laws for mining deposits, such as the Environmental Protection Law and the Resource Protection Law. The production authorities have also made some regulations , such as the technical regulations for the stope, etc. Require implementation when selecting mining methods. 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