The utility model relates to a special back of body of instrument formula template is stupefied for it locates first frame template both sides and second frame template that set up relatively to press from both sides tight, special back of body of instrument formula template is stupefied includes: support to lean on in the enhancement of first frame template lateral surface is stupefied, and formed at strengthen stupefied both ends and to the centre gripping tip that second frame template orientation is extended, the centre gripping tip is close to one side of second frame template is formed with first pinch plane, first pinch plane subsides are located the lateral surface of second frame template cope match -plate pattern, the centre gripping tip in correspond on the first pinch plane the frame of second frame template is equipped with the inserting groove that supplies this frame of holding. Centre gripping tip through strengthening stupefied both ends forms the firm clamping -force of second frame template for propping up of second frame template is established firmly, has avoided the problem of the mould that rises, effectively improves concrete placement's quality.