The invention belongs to a reinforcement device for a fuel gas underground gas storage well, comprising an integrated press plate provided with a ladder-shaped (step-shaped) hole at the center, an anchor rod hole (or both an anchor rod hole and a fastening bolt sleeve hole) arranged on the integrated press plate, an anchor rod and an anchor bolt of the anchor rod. According to the reinforcement device, the integrated press plate provided with the ladder-shaped hole at the center is adopted, the lower end of the anchor rod is provided with the anchor bolt to enhance the adhesive force of the anchor rod to the stratum, the integrated press plate provided with the ladder-shaped hole at the center is directly sleeved on a joint head of a well opening device, so as to axially fix the gas storage well, and the reinforcement device can resist against an impact force which is more than 500KN in use. Therefore, the reinforcement device has the characteristics that the reinforcement device is simple and reliable in structure, and is high in impact force resistance, the well fixing effect can not be influenced by the loosing of a bolt or the corrosion of the contact surface, the shifting when the gas storage well is used and the accident that the gas storage well flies out of the ground when a well cylinder body is broken can be effectively avoided; and the reinforcement device has the advantages of safety and reliability in use, low production cost, low use cost, etc.