The utility model provides a door hinge, a safety door and a cabinet. The door hinge comprises a hinge seat, a hinge body and a core shaft. The hinge seat is integrally formed by bending a first plate reinforced part and comprises a first folding part, a second folding part, a third folding part and two first connection parts, wherein the first folding part, the second folding part, the third folding part and the two first connection parts are sequentially bent. The third folding part and the two first connection parts are arranged on opposite sides of the first folding part. The two first connection parts are provided with shaft holes for the core shaft to penetrate through. The hinge body is integrally formed by bending a second plate reinforced part and comprises a fixing part and a second connection part. The second connection part is provided with a through hole for the core shaft to penetrate through. The two shaft holes and the through hole are coaxial. The core shaft penetrates through the shaft holes and the through hole. The second connection part is arranged between the first connection parts. The safety door and the cabinet use the door hinge. The door hinge is strong in connection strength, large in damage difficulty and capable of greatly improving anti-theft performance grade of the cabinet and the like and facilitates market competitiveness of the cabinet and the like.