A dynamic stabilization device includes a fixing plate, which is arranged on a patient's bone. The fixing plate is formed with two fixing holes. Each of the fixing holes further includes a first opening and a second opening, wherein the first opening is larger than the second opening. At least one screw passes through one of the fixing holes and is fixed to the patient's bone. The screw further includes a screw head and a screw rod. The screw head further includes an upper circumference and a lower circumference, wherein the upper circumference is greater than the lower circumference. At least one elastic member is arranged on an inner periphery of the fixing hole or the screw head. The screw head abuts the elastic member or the elastic member abuts against the fixing hole. The above structure allows tiny movement during the bone healing period of the patient, so as to be beneficial to the second stage of healing of the bone.一種動態穩定裝置，其包含固定板，其設置在病患骨頭上，固定板上開設二固定孔，每一個固定孔更包含第一開口和第二開口，其中，第一開口大於第二開口，至少一個螺釘穿設其中一固定孔內，並固定於病患骨頭上，螺釘更包含螺頭和螺桿，螺頭更包含上圓周及下圓周，其中上圓周大於下圓周，至少一個彈性件設置在固定孔內周緣或者螺頭上，螺頭抵接彈性件或彈性件抵接固定孔，上述結構可以使得病患在骨骼癒合期間，產生微動，有利於骨骼的二期癒合。
