A safety gate is configured to be mounted at a gateway and has a frame and a gate body. The frame is configured to be mounted between two walls disposed at two sides of the gateway. The frame has two sides and two first positioning assemblies respectively disposed at the two sides of the frame. The gate body is disposed in the frame and has two sides and two first pivot assemblies respectively disposed at the two sides of the gate body. The first pivot assembly at each side of the gate body is configured to detachably and pivotally connect with the first positioning assembly at a respective one of the sides of the frame.