The invention belongs to the technical field of weapon damage assessment, and particularly relates to a method for analyzing the distribution law of explosion loads on the surface of a steel member. The component surface explosion load distribution rule analysis method comprises the following specific steps: firstly, calculating the positive reflection peak pressure and the positive impulse of thecenter of an explosion facing surface; establishing a fitting formula of the positive reflection peak pressure and the positive impulse by utilizing a least square curve fitting method; determining acomponent surface distribution function; determining explosion load parameters of any point on the surface of the component; and combining the explosion load parameters of the central point of the component, namely explosion load reflection pressure P and impulse I, and determining the explosion load parameters of any point by utilizing the normalized distribution function sum, namely, after theexplosion load parameters of the surface of the component are determined by utilizing the method, performing evaluation analysis on the damage of the component by utilizing the obtained explosion loadparameters. The method has the advantages that the effect in the near-explosion explosion environment can be quickly and reliably calculated, and the like.