Abstract: The form of international cooperation in China's outer space explore has developed from bilateral cooperation to multilateral cooperation,the degree of cooperation is deepening,technology exports and cooperative research become normal. For the protection of the intellectual property rights of the existing technology in the cooperation,the confidentiality provisions shall be stipulated in the agreement,and the implementation conditions of the improvement patent and the liability for breach of contract shall be made clear. For the cooperative research technology,we should consider the contribution of the cooperative parties,and clarify the interest sharing mechanism of the intellectual property through the cooperation agreement. Space technology has national defense sensitivity,it should seek a reasonable balance between national interests and interests,confidentiality and openness. To this end,we should establish the evaluation mechanism of intellectual property of cooperative projects and the hearing system of the state intervention right. In order to enhance China's intellectual property competitiveness in space technology,we should strengthen the contract management of external cooperation and enterprises internal affairs, reduce the uncertainty of the allocation of intellectual property rights in the cooperation,and establish the classification evaluation mechanism of intellectual property rights according to the difference risk of cooperation project.