Compass

A compass comprises a locating needle and a drawing pen. The drawing pen is used for drawing circles in a rotating mode with the locating needle being the center. The compass further comprises a case, a suction top connected to the bottom of the case, and a fixing frame connected to one side of the case. The locating needle is inserted into the suction top, the drawing pen is installed on the fixing frame, and the fixing frame can move in a telescoping mode relative to the case so that the position of the drawing pen can be changed. The compass is simple in structure, convenient to operate, and capable of being used for drawing the circles of various sizes on smooth or rough surfaces conveniently through the suction top and location of the locating needle, thereby being capable of being applied to various occasions.