Hand-held soil body density detection device

The invention relates to a hand-held soil body density detection device, comprising an outer cylinder and a detection rod arranged in the outer cylinder, wherein a first spring is arranged between the top part of the detection rod and the outer cylinder; a limiting pin groove is arranged on the upper part of the detection rod; limiting pins are symmetrically arranged on the outer side of the limiting pin groove; a second spring matched with the limiting pin is arranged in the inner side of the limiting pin groove; the second spring presses a positioning pin against the internal wall of the outer cylinder; a limiting pin hole matched with the limiting pin is arranged on the upper part of the outer cylinder; and a contact probe with a scale is arranged at the bottom of the detection rod. The hand-held soil body density detection device is simple in structure, small in volume, light in weight, low in cost, easy to operate, and suitable for being applied to rock soil body stabilization and tunnel simulating tunneling experiments.