With the widespread use of satellite navigation technique, the requirement of the precision and effectiveness in particular of navigation is more and more strict. To guarantee the requirement, the method of RAIM is addressed. The superiority of the method has become more and more apparent. The common methods of RAIM include the comparison of pseudo-range, the LSE and the Parity method. In this article, the novel method is studied and simulated. The graphic and numeral simulation results adequately demonstrate that the method is feasible.