A hinge includes a first connecting member, a shaft, a second connecting member, and a shaft sleeve unrotatably fixed to the second connecting member. The shaft is unrotatably fixed to the first connecting member, and includes a shaft body having a flat surface formed on a circumference of the shaft body. The second connecting member is rotatably mounted to the shaft body. The shaft sleeve defines a receiving hole for the shaft body rotatably passing therethrough. The shaft sleeve includes a flat resisting block resisting against the flat surface. When the second connecting member is rotated relative to the first connecting member, the resisting block is deformed, and slide onto the circumference of the shaft body from the flat surface.