The invention relates to a method for determining interference-producing conditions and types of shock waves/ leading-edge type shock waves of a spacecraft body, pertaining to the field of spacecraft aerodynamic heat environment analyses. The method comprises following steps: establishing quantitative relations between interference-producing conditions for body shock waves/ leading-edge type shock waves and flying states and aerodynamic configuration according to shock relations and rapidly determining interference-producing conditions for body shock waves/ leading-edge type shock waves and giving interference-producing positions; establishing associated relations between interference type determination parameters for body shock waves/ leading-edge type shock waves, and flying states and aerodynamic configuration parameters and rapidly determining according to different types of interference flow structure features of body shock waves/ leading-edge type shock waves and rapidly determining types of interference. The method is capable of shortening determination cycles of interference-producing conditions for body shock waves/ leading-edge type shock waves so that determination difficulty is reduced and design efficiency is increased.