A door hinge is a device that allows a door to naturally and smoothly rotate to open and close. The door hinge includes a hinge seat and a hinge body. One end of the hinge body is connected to the door frame through a core shaft, and the other end is connected to the door leaf; The hinge body is divided into two sections, one connected to the core shaft and the other connected to the door leaf. The two hinge bodies are connected as a whole through a connecting plate, which is provided with a door gap adjustment hole. Due to the fact that the hinge body is divided into two sections and connected as a whole through a connecting plate, the door leaf can be removed for repair by removing the connecting plate.