The experimental method is performed pertaining to reconstrct Martian atmospheric density based onaccelerometer by analyzing inertial data in abroad and its principle and feasibility have been discussed. According to the data of Phoenix Mars lander and MarsGRAM, the minimum indicators for the resolution of accelerometer is required to higher than 0.000 1 G and corresponding to the data of MarsGRAM. Compared with the data of Phoenix Mars lander, it demonstrates that accelerometer can be used to reconstruct Martian atmospheric density.