The invention provides a system and method for detecting ultrahigh frequency radio frequency identification applied in mutual inductors. The detection system comprises: a detection control box, a spacing measuring scale and an objective table; the detection control box is connected with the objective table through the spacing measuring scale. The system has a simple structure and an ingenious design and is portable; the system and method can meet the requirement of on-site multiple-site detection. By means of the system and the method, the input detection requirement of frequency radio frequency identifications and the mutual inductor output detection requirement of frequency radio frequency identifications can both be met so that the product quality of mutual inductors and the benefit of mutual inductor manufactures are guaranteed. The system and the method have high integrated level and complete functions.