Geological engineering hammer

The utility model discloses a geological engineering hammer. The hammer comprises a hammer head and a hammer handle, the device further comprises a plumb bob, a main spring, a sub-spring and a tape measure. The hammer handle comprises a first hammer handle, a second hammer handle and a third hammer handle; the plumb bob is in threaded connection with one end part of the hammer head; the first hammer handle and the hammer head are integrally formed; the second hammer handle is fixedly connected with the first hammer handle through the main spring; the two ends of the sub-spring are fixedly connected with the end of the hammer head and the second hammer handle respectively, the third hammer handle is fixedly connected with the second hammer handle, a cavity used for installing the tape measure is formed in the third hammer handle, and a first rotating shaft and a second rotating shaft which can rotate in the circumferential direction are arranged in the cavity. The multifunctional hammercan effectively prevent