Abstract: The construction and operation of space solar power station will cause numerous space debris. The microwave wireless power transmission and laser wireless power transmission may interfere satellite sign of other states. Space solar power can directly provide energy to national military activities and military installations. It can be used to develop weather weapon. Use of space solar power is actually an act of appropriation. Based on the ground, international community shall promote the legislation on prevention of arms race in outer space and weaponization in outer space, moving space debris, fairly shairing space solar power and liability for space activities.