The utility model provides a multi-row insulating cap, and the insulating cap comprises a cap body. The outer wall of the opening end of the cap body is vertically connected with a pore plate and a clamping board, which are in an all-in-one structure. The pore plate is located at one side of the cap body, and the clamping board is located at the other side of the cap body. The pore plate is provided with a plurality of snap grooves which are distributed at equal intervals. The clamping board is hinged with a clamping strip. An end of the clamping strip is provided with a snap pore plate and a clamping plate. A cable head is inserted into the cap body, and then is snapped with the snap grooves on the pore plate through snaps on the clamping strip, thereby hooping the cable head in the cap body. The cooperation of the elastic cap body with the clamping board and the pore plate can achieve the fixing of cable connectors in various sizes in the insulating cap. The insulating cap provided by the utility model is simple in structure, is convenient to use, and is high in value of reutilization.