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A large number of spacecraft and space debris are intensively distributed in the geostationary orbit space, and once a collision occurs, it will have a serious impact on GEO. Calculate the relative velocity between space debris running in or across the GEO area and GEO satellites. The conservation of mass and momentum is used to verify the NASA standard breakup model. According to the collision events between space debris with GEO satellite, under complete disintegration and incomplete disintegration, calculate the diffusion rate of new debris generated by the collision. Space debris collides with GEO satellites at a relatively large relative speed, which will generate a large number of new debris and spread to the entire GEO area in about half a day, posing a greater threat to spacecraft in the area.