The invention belongs to the technical field of blasting vibration testers and relates to a karst landform blasting vibration tester. The karst landform blasting vibration tester comprises a fixing outer cylinder, a mounting inner rod, a protective box and a control device; the mounting inner rod is inserted into the fixing outer cylinder; the bottom of the mounting inner rod is provided with a vibration sensor; the protective box is welded to the upper end of the mounting inner rod; and the control device is arranged in the protection box. According to the karst landform blasting vibration tester of the invention, the lower end of the fixing outer cylinder is a conical ground-drilling end; the outer wall of the fixing outer cylinder is provided with spiral teeth, so that the fixing outer cylinder can be conveniently driven into the ground so as to be fixed; the mounting inner rod provided with the vibration sensor is inserted into the fixing outer cylinder, so that convenience in mounting is realized; the vibration sensor installed at the lower end of the mounting inner rod is protected by the fixing outer cylinder, and the vibration sensor can be protected from being worn by broken stone in the ground, and can be also protected from being corroded by the moisture of the ground.