Joint box capable of distinguishing lines and facilitating inspection and maintenance

The invention belongs to the technical field of connector boxes, and particularly relates to a connector box capable of distinguishing lines and facilitating inspection and maintenance, the connector box comprises a shell, a fixing block and a transverse plate, the surface of the front end of the shell is provided with a line passing port, a baffle is arranged in the line passing port, a bottom plate is fixed below the fixing block, and a mounting mechanism is arranged in the bottom plate. A heat dissipation aluminum sheet is installed on the right side of the transverse plate, the transverse plate is located at the front end of the fixing block, a mounting groove is formed in the surface of the top end of the shell, and a clamping mechanism is arranged in the mounting groove. According to the invention, through the arrangement of the limiting plate, the limiting plate can limit a wire in the connector box, so that the wire routing in the shell is more orderly, the wire cannot be scattered or wound together,