The relationship between the post inventor and his unit is a kind of labor contract relationship, which is manifested in the relationship between employees and employers in capitalist countries. In the patent law, this relationship is reflected in the attribution of inventions completed by employees, that is, whether the inventions completed by employees are job inventions or non-job inventions. In principle, the solution to this problem should follow the principle of "contract is superior to law", that is, the ownership of the right of invention and creation should be solved first in accordance with the agreement in the labor contract.