Abstract: Current mine-used CDMA wireless communication systems go against large-scale application because of higher overall cost, and it is difficult to realize seamless coverage of whole mine for wireless signal of the systems because of complex underground roadway. To solve the problems, the paper proposed a design scheme of new type of mine-used CDMA wireless communication system which taking FEMTO base station as underground coverage device and taking underground industry Ethernet as main transmission channel. It gave overall structure of the system and introduced composition and main technical parameters of FEMTO base station in details. The test result showed that the system has characteristics of wide coverage of wireless signal and good communication effect.