A clutch device includes a sleeve-shaped first drive member, a first seal member, a second seal member, a plug, a second drive member, and a control member. The first drive member, the first seal member and second seal member cooperate to form a sealed chamber filled with hydraulic liquid. The plug divides the sealed chamber into a first chamber and a second chamber, and the plug defines a screw hole and an opening communicating the first chamber with the second chamber respectively. An output shaft is extended from the plug. The second drive member is driven by the first drive member, and includes a screw shaft threadedly engaged with the screw hole of the plug. The control member is configured for covering or uncovering the opening of the plug. The clutch device is used for prevent overload.