The invention relates to an intelligent SCD loop checking method and device. The method comprises the steps that a signal semantic feature dictionary database is established according to a functional loop and semantic features of functional signals of intelligent SCD; the functional loop between intelligent devices of the intelligent SCD is analyzed; the signal semantic feature dictionary database is used for detecting the functional loop in the intelligent SCD. Therefore, the reliability of finally obtained detection results and checking reports is high, and the method is an effective method for design examination of an intelligent transformer substation, so that the design and debugging period of the intelligent transformer substation is greatly improved.