The invention discloses a composite board product gluing system which is characterized by comprising a black glue storage tank and a white glue storage tank, wherein the black glue storage tank is sequentially connected with a black glue rubber pump and a stirring chamber by virtue of a black glue conveying pipeline; the white glue storage tank is sequentially connected with a white glue rubber pump and a stirring chamber by virtue of a white glue conveying pipeline; a black glue pipeline control valve is arranged on the black glue conveying pipeline between the black glue rubber pump and the stirring chamber; a white glue pipeline control valve is arranged on the white glue conveying pipeline between the white glue rubber pump and the stirring chamber; a cleaning solution storage tank is respectively connected with the black glue pipeline control valve and the white glue pipeline control valve by virtue of a pipeline and forms a cleaning channel with the stirring chamber; the cleaning solution is injected into the stirring chamber and flows out of a glue drop hole of a glue dropper; and a cooling water tank is sequentially connected with a cooling water circulating pump, a first cooling chamber, a second cooling chamber and a cooler unit so as to form a circulating loop. The composite board product gluing system disclosed by the invention has the advantages of ingenious structural design, obvious beneficial effects and convenience in popularization and application.