The utility model discloses cushioned hammer is used in sign nail installation of gas pipeline ground, including tup and connected handle, the tup includes the hammer handle, hammer handle one end sets firmly location portion, another end screw thread connection the handle, be provided with the depressed part with gas pipeline ground sign nail shape adaptation in the portion of location. Its purpose is in order to provide a simple structure, to be favorable to improving the construction security, reducing the cushioned hammer is used in sign nail installation of gas pipeline ground of the signnail proportion of goods damageds.