A clamping thickness adjustment mechanism (10) for a surgical linear cutting anastomat (7). The clamping thickness adjustment mechanism (10) is composed of a nail chamber bracket (12), an anvil bracket (16), a clamping hook (19), a sliding block (20) for clamping thickness adjustment, and a sliding protruding block (21). When the sliding block (20) for clamping thickness adjustment moves along the longitudinal direction of the anvil bracket (16), the distance between a protruding block (30) on the sliding protruding block (21) arranged on an anvil assembly (9) and a pivot (22) on the nail chamber bracket (12) of a nail chamber assembly (8) is adjusted, and meanwhile the distance between a protruding block (28) of the sliding block (20) for clamping thickness adjustment arranged on the anvil assembly (9) and a pressing block (23) on the nail chamber bracket (12) of the nail chamber assembly (8) is adjusted as well. As the distance between a pivot hole (24) on the clamping hook (19) and a hook (25) is constant, so that the clamping thickness adjustment mechanism (10) adjusts the thickness of clamped tissue between the nail chamber assembly (8) and the anvil assembly (9).Linvention concerne un mécanisme dajustement dépaisseur de serrage (10) pour un anastomate de coupe linéaire chirurgicale (7). Le mécanisme dajustement dépaisseur de serrage (10) consiste en un support de chambre de clou (12), un support denclume (16), un crochet de serrage (19), un bloc coulissant (20) pour lajustement dépaisseur de serrage et un bloc saillant coulissant (21). Lorsque le bloc coulissant (20) pour lajustement dépaisseur de serrage se déplace le long de la direction longitudinale du support denclume (16), la distance entre un bloc saillant (30) sur le bloc saillant coulissant (21) agencé sur un ensemble enclume (9) et un pivot (22) sur le support de chambre de clou (12) dun ensemble chambre de clou (8) est ajustée et simultanément la distance entre un bloc saillant (28) du bloc coulissa
