The invention discloses a method for generating a lightning stroke simulation model of a combined type composite tower. The method comprises the following steps (1) of obtaining tower structure information, (2) establishing a wave impedance model of a ground wire cross arm and a tower body and establishing a sectioned concentrated inductance model of a grounded down conductor, (3) determining the path where a flashover is likely to happen according to a tower head structure and establishing an insulation flashover model based on a pilot method, (4) establishing a grounded resistance model considering the lightning current impact effect and (5) forming the lightning stroke simulation model of the composite tower through connection based on the models. By the adoption of the method for generating the lightning stroke simulation model of the combined type composite tower, the situation of the lighting stroke on the composite tower can be more accurately reflected, and a basis is provided for power grid maintenance personnel so as to grasp the anti-lighting performance of the composite tower.