The invention relates to a bolt tension measuring structure, and belongs to the technical field of tension measuring. The bolt tension measuring structure comprises two symmetrical metal structures and a full bridge circuit capable of sensing the strain of a bolt. The structure of split type bolt tension transmission and strain bridge circuit protection is used, the difficult problems of tension transmission and mounting and protection of a real vehicle strain circuit are solved, a bolt tension real vehicle test is made possible, and the advantages of being precise in test result, simple in mechanical structure and convenient to use are achieved.