Abstract: In a molding fixing structure, a T-stud stood within a roof groove is inserted into a T-stud insertion hole of a fixing clip, and then a roof molding is moved in a longitudinal direction of the roof groove with respect to the T-stud to insert the T-stud into a T-stud fixing hole of the fixing clip. A base plate portion of the fixing clip includes a bottom portion positioned lower than a lower surface of a head portion of the T-stud when the T-stud is inserted into the T-stud insertion hole, a guide portion that extends obliquely upward from the bottom portion toward a longitudinal center side of the roof molding and is in sliding contact with the lower surface of the head portion of the T-stud, and a top portion formed in the guide portion and positioned higher than the lower surface of the head portion.