A set of 70mm high speed photography camera(HSPC) system has been developed ,which is such an instrument that it can record the 3D flying position and space parameter of object such as laser-guided bomb,rocket and guided missile. The main constitutes and the principle is introduced and the design of camera is described in detail. Because 70 mm HSPC System has successful application, it can offers a few ideas to the design of other HSPC.