In order to solve the problem that the MEMS accelerometer used the external ballistic information measurement cannot withstand the high overload during projectile launching and is easy to cause damage to the device,a low-range capacitive accelerometer with high overloading resistance was designed. Platforms modeled on the bridge fender structure were placed at the end of the beam where the stress was relatively large and easy to be broken by impact. The structure can absorb a part of the energy during an impact with its own deformation,thereby reducing the deformation of the sensor itself. The finite element simulation results indicated that the stress of the proposed accelerometer under the condition of 30 000 g overload was reduced from 994. 88 MPa to 70 MPa. Therefore,the possibility of device damage and fracture was greatly reduced,which meets the design expectations of improving the sensor’s anti-overload capability.