Dynamic sounding hammer

The utility model relates to the technical field of dynamic sounding, in particular to a dynamic sounding hammer which comprises a hammer head rod, the bottom end of the hammer head rod is provided with a hammer head connecting thread groove, and the bottom of the hammer head connecting thread groove is in threaded connection with a hammer head. The counterweight rod is mounted at the top end of the hammer head rod; and the feeler lever is mounted at the top end of the counterweight lever. The dynamic sounding hammer is suitable for reconnaissance of soft soil layer distribution and burial depth in a flat dam area or a plain area, and a riverway, a pipe duct or other projects with soft soil layer distribution, a certain number of reconnaissance drill holes are arranged according to standard requirements, and the depth of a covering layer and the type of a rock-soil body in a project area range are found out; and then a dynamic sounding hammer is adopted to explore and enclose the exploration points so as to d