Edge sealing assembly of composite board and edge-sealed composite board

The utility model discloses a composite board edge banding assembly and an edge banding composite board, the composite board edge banding assembly comprises a first edge banding strip and a second edge banding strip, after the first edge banding strip is matched with the second edge banding strip, a second outer baffle plate and a second inner baffle plate of the second edge banding strip are located between a first outer baffle plate and a first inner baffle plate of the first edge banding strip; an outer side sealing strip is arranged between the second outer baffle and the first outer baffle, and an inner side sealing strip is arranged between the second inner baffle and the first inner baffle, so that two waterproof structures are formed. After the edge sealing assemblies are correspondingly installed and fixed on the four edges of the side face of the composite board, the upper face board, the lower face board and the edge sealing assemblies on the periphery of the composite board form a closed structure