Analysis method and analysis device for warning spacecraft launching collision risks

The invention discloses an analysis method and analysis device for warning spacecraft launching collision risks. The analysis method includes the steps that S1, all intersection events of a spacecraft and a background object during launching are calculated; S2, for each intersection event, the possibility of collisions between the spacecraft and the background object is calculated; S3, the total possibility of collisions between the spacecraft and the background object is calculated. According to the analysis method and analysis device for warning the spacecraft launching collision risks, the collision risks which a certain launching window is going to encounter are evaluated through the total possibility of collisions, the multiple intersection events which the launching window is going to encounter at different intersection moments are fully taken into account, and the defect caused by one single intersection risk is overcome.