The performance of the multibaseline phase unwrapping is directly related to noise level. For instance, the presence of phase noise makes the phase unwrapping method based on the classical Chinese remainder theorem unrobust enough and inapplicable in practical cases. So a method based on a SR-CRT (searchedform robust Chinese remainder theorem) was presented, and the common factor was carried out to build the new system of simultaneous congruence in the method. Theoretical analysis and experimental results prove the effectiveness of the SR-CRT method and demonstrate that selecting reasonable common factor can improve the noise robustness of the SR-CRT method.