Limitation of action is created in Rome law era, the definition of its object is also experienced the process from the right of suit to substantive rights. According to the classification standard of the scope of application of limitation of action, we can see that it is reasonable to let the claim become the suitable object of the limitation of action, and it has been the common wisdom in the academic and legislative boundary. But we should make different treatments to different claims. The right of obligatory claim shall be included in the scope of limitation. The claim right on the personal right should not be suited to the limitation of action except for the damage compensation. And according to the current conditions of our country, it will do more good than harm if the petition rights on property don’t suit to the limitation of action.