The invention discloses a storage battery insulating support plate. The storage battery insulating support plate is characterized in that: the overall structure is an insulating plastic whole which is formed by an isolation block, an insulating expansion working surface, an installation groove and a limit block; an upward part is the insulating expansion working surface; the front end of the insulating expansion working surface is the isolation block and the back end is the limit block; the back surface of the insulating expansion working surface is provided with the installation groove; the isolation block of one storage battery insulating support plate can be connected with the limit block of the other storage battery insulating support plate in a matching way. The area of the insulating expansion working surface is greater than that of the installation groove. The storage battery insulating support plate has the advantages that: the structure is simple, the storage battery insulating support plate is convenient to install and use, the insulativity is high, and the cost and the storage battery installation difficulties can be reduced obviously.