The invention provides an in-vitro detection method for a clipping effect of a magnesium alloy laparoscopic surgery hemostasis clip. The clipping effect of the absorbable magnesium alloy hemostasis clip is comprehensively tested through a pressure resistance test after the magnesium alloy hemostasis clip clips, an in-vitro clamping force test and a clamping force test in the hemostasis clip degradation process, and when the magnesium alloy hemostasis clip meets the requirements of the three tests, it is regarded that the magnesium alloy hemostasis clip meets the clinical requirements. The in-vitro detection method has the advantages that the clamping effect of the magnesium alloy hemostasis clip can be systematically represented, operation is easy, the accuracy is high, the stability is good, and time and cost are saved.