Pressure gage protector

The utility model relates to a pressure gage protector which mainly solves the problem that a pressure gage is damaged because the traditional pressure gage is in direct contact with a medium to be tested. The pressure gage protector is characterized in that an inner shell (2) is fixed in an outer shell (1), an empty cavity (4) is formed between the inner shell (2) and the outer shell (1), the left and right sides of the inner shell are provided with through holes (5), pistons (3) are arranged on the left and right sides inside the inner shell (2), and a non-corrosive buffer solution is filled between the two pistons (3) in the inner shell (2); and a gage joint (6) for connecting a pressure gage is arranged on the upper middle part of the outer shell (1), the gage connector (6) is communicated with the inner shell (2), a lower joint (7) is arranged in the lower middle part of the outer shell (1), and the lower joint (7) is communicated with the empty cavity (4). The pressure gage protector has the characteris