The invention relates to a bionic mantis driven on the basis of an SMA (Shape Memory Alloy), and belongs to the technical field of robots. The ionic mantis driven on the basis of the SMA comprises a driving mechanism, a rear frame, a bracket and a bent unit body, wherein the driving mechanism comprises a first SMA spring component and a second SMA spring component; one end of the first SMA springcomponent is connected with the rear frame; the other end of the first SMA spring component is connected with a first supporting plate; the bracket is rotatably connected with the rear frame through asecond supporting plate; and the bent unit body comprises a first end cover, a second end cover and a rotation plate, wherein the first end cover and the second end cover are oppositely arranged, andthe rotation plate is arranged between the first end cover and the second end cover. By use of the bionic mantis driven on the basis of the SMA, the SMA spring component is taken as the driving mechanism, so that the bionic mantis driven on the basis of the SMA is guaranteed to have the characteristics of small operation noise and high control accuracy. Meanwhile, through the rear frame, the bracket and the bent unit, the mechanical structure of the leg of the bionic mantis can be made, and therefore, the bionic mantis has a simple structure and is convenient in installation.