Safety table sphgmomanometer with mercury column

The utility model discloses a safety table type mercury column sphygmomanometer which belongs to the field of medical apparatus, and the utility model is improved on the basis of an original table type sphygmomanometer. The utility model is composed of a bottom case (1), an upper cover (2), a mercury column glass pipe (3) which is arranged on the inner arm of the upper cover (2), a dial (4), a glass pipe base (5), a mercury storing bottle (6), a rubber pipe (7), an arm band (8), an air sac (9), an air valve (10) and an oval limiting frame (11), wherein the oval limiting frame (11) in which the air sac can be arranged is arranged at one end in the bottom case (1) under the right of the mercury column glass pipe (3), and a U-shaped opening is arranged on the frame surface of the oval limiting frame (11). Compared with the prior art, the utility model is safe and convenient in use, and can prevent the mercury column glass pipe from being crushed by an air valve and avoid unnecessary loss.