A photographic theodolite for running-fire trajectories is designed to take pictures of ballistic characteristics for suppressive antiaircraft weapons such as antiaircraft guns and rockets in running-fires, its design involves a special control scheme, with an extra running photographic mechanism added on the basis of a conventional photographic theodolite for trajectories. It reproduces several trajectories from the negative with photographs taken, and supplies a series of corresponding coordinate systems. Trajectories and sequence of rounds can be distinguished via erasing-processing. Chief tactical indices such as " antiaircraft firing concentration" "firing tables" can be obtained in running-firing state through interpretation and computation. In this way it can provide data on the dynamic characteristics of suppressive antiaircraft weapons.