The invention belongs to the electric technical field and relates to an insulation clamp for installing a lighting lamp on an insulating rod. With the insulation clamp adopted, an operator can be facilitated to conveniently and safely operate equipment at night. The insulation clamp comprises a clamping body, a mounting body and a connecting body; the clamping body comprises a first connecting plate, a clamping portion and a fastening portion; the fastening portion comprises two fastening plates which are oppositely parallel to each other; the two fastening plates are fixedly connected with two arc plates of the opening end of the clamping portion respectively; the fastening plates are provided with fastening bolts; the mounting body comprises a mounting ring; a connecting opening is formed at one end of the mounting ring; the connecting opening is in sealed connection with a second connecting plate; a positioning screw hole is formed in the ring body of the mounting ring; a positioning screw is arranged in the positioning screw hole; the connecting body comprises two connecting surfaces which are oppositely parallel to each other; the clamping body and the mounting body are respectively connected with the two connecting surfaces of the connecting body through the first connecting plate and the second connecting plate; and after the clamping body and the mounting body are respectively connected with the two connecting surfaces of the connecting body, the clamping body and the mounting body are located in the same plane.