Mounting system for overall bathroom

The invention discloses a mounting system for an overall bathroom. Frames are arranged on the periphery of each side board, T-shaped grooves are formed in the frames correspondingly, openings of the T-shaped grooves all face the back faces of the side boards, mounting openings are formed in the two ends and the middle of each T-shaped groove correspondingly, the width of each mounting opening is consistent with the width of the bottom face of the corresponding T-shaped groove, and the length of each mounting opening is 1.5-3 times of the width of the mounting opening. The upper frames of the side boards are connected with a top board through top board connecting pieces; the lower ends of the left frames or the right frames of the side boards are connected with a base plate through base plate connecting pieces; the side boards are arranged around the peripheries of the base plate and the top board, and the length of the bottom edge of each side board is smaller than the edge length of the base plate; side boar