Arbitrator is the main body of arbitral activity and the core of arbitral system. The admittance system of arbitrator is still the precondition and base of arbitral equity. Through the comparatively analysis on admittance system of arbitrator and related law occupation between China and foreign countries, this paper mainly studies the existing problems of the admittance system of our arbitrator. On the basis of use for reference, this paper also brings forward some conceptions on the construction and perfect for the admittance system of our arbitrator.