The utility model discloses a case cover supporting control circuit for a cigarette case sealing machine. The case cover supporting control circuit comprises a control relay. The control relay is used for selecting opening and closing of the circuit according to detection signals and is applied to a control circuit arranged in case cover supporting executing mechanisms, the control circuit is further serially connected with two executing relays, and the two executing relays are used for respectively controlling the corresponding case cover supporting executing mechanisms. The case cover supporting control circuit for the cigarette case sealing machine has the advantages that the case cover supporting executing mechanisms are controlled by the aid of the logic circuit according to the case leather spreading detection signals and the cigarette in-place detection signals, so that the heights of case covers of cigarette cases can be controlled, influence of down-warping of upper case covers on case filling and folding of inner case covers can be prevented, and the cigarette cases can be prevented from being squeezed during case sealing and folding; the logic circuit is provided with the control relay and further controls the executing relays of the two upper case cover supporting executing mechanisms respectively, accordingly, the integral case cover supporting control circuit is simple in structure and low in cost, and control effects can be realized easily and conveniently.