The current calculation methods of recovery of CBM（coalbed methane）are simple，which ignores the influence factors of recovery systematically. Therefore，a new analysis method of the recovery of CBM was put forward and verified，which can reflect major influence factors during each production period. The recovery of CBM is mainly controlled by sweep efficiency of reservoir pressure drop and desorption efficiency. The sweep efficiency of pressure drop depends on well pattern，well types，fracturing and other engineering factors. Desorption efficiency is determined by gas sorption parameters and abandoned pressure. Reduction of 0.1 MPa of abandoned pressure can lead to enhancement of recovery by 4.43%. During the early period of CBM production，the sweep efficiency of pressure drop mainly contributes to the CBM recovery degree and its increasing will result in a faster production speed of coalbed methane. During the later production period，the recovery degree is controlled by desorption efficiency. The efficient way to improve the sweep efficiency of pressure drop is to adopt the optimized well pattern which can match the coalbed geological parameters. And then the well pattern can control the coalbed effectively and volumetric desorption may be formed. Negative pressure production method can reduce the abandoned pressure of coalbed reservoir to improve the desorption efficiency of the coalbed methane.