Culture medium punching sampler

A culture medium punching sampler belongs to the technical field of microbiological experiment equipment, and structurally comprises an outer tube, an inner tube, a reset spring, a clearing button and a punching sampling head which are connected with each other. Sampling operation is conducted in a solid culture medium and a sample through a replaceable punching head connected with the outer tube. After sampling is completed, residual agar culture media and samples in the punching heads are pushed out through the inner tube. According to different punching and sampling requirements, punching heads with different hole diameters are replaced for punching, and when a clearing button is released, a clearing pushing column moves upwards to complete resetting under the action of elastic force of the reset spring in the inner tube, so that the next operation is facilitated, the punching inoculation time is greatly saved, and the experiment efficiency is improved. The replaceable punching head is made of a titanium a