Analyzing the current process of using the steering wheel to test the height of the proximity fuze in the shooting range, it is believed that the current coplanar intersection test method has certain limitations.In order to obtain more accurate explosion height test data, an experimental test method is proposed, which constructs a spatial different plane straight line according to the observation station and carries out explosion height search in a given spatial area combined with the actual explosion height value.Through the verification and calculation of a group of ammunition data in the explosion height acceptance test of a proximity fuze shell, and compared with the coplanar intersection method, the explosion height data calculated by the two methods are basically the same, and the position deviation in the horizontal and firing direction can reach 1.8 m, this method further improves and optimizes the existing spatial intersection calculation method. The experimental verification shows that this method can be applied to the three-dimensional coordinate measurement of explosion points in the shooting range of conventional weapons.