The embodiment of the invention discloses a terminal performance evaluation method. The method includes the following steps: performing the following operations for any cell in a cell set: acquiring a performance index value of at least one first terminal corresponding to a terminal type to be evaluated and the performance index value of at least one second terminal corresponding to a terminal type not to be evaluated in any cell according to the acquired communication data of user terminal groups with neighbor relations in any cell; determining a performance evaluation result of the terminal type to be evaluated in any cell according to the performance index value of the at least one first terminal and the performance index value of the at least one second terminal, wherein each user terminal group includes the at least one first terminal and the at least one second terminal; and determining the performance evaluation result of the terminal type to be evaluated in the cell set according to the performance evaluation result of the terminal type to be evaluated in each cell of the cell set. The embodiment of the invention also discloses a terminal performance evaluation device.