The basis for the real contract is the reasonless.TheTheory has been criticized by the German scholars and judges.There is a trendof relativeness of the real contract theory in recent years.

• 无因性是物权契约的理论基础.；物权契约理论一直为一些德国学者和法官所批判，近年来出现了一种物权契约理论相对化的发展趋势。