All-interior top board and wallboard connection structure for unit bathroom

The invention provides an all-interior top board and wallboard connection structure for a unit bathroom. The structure comprises a civil ceiling and a civil wall, a top board, a wallboard, and first and second connectors, the top board comprises a ceiling connection portion and a wall connection portion located on the right side of the ceiling connection portion, the top of the wallboard is connected with the wall connection portion, the first connector extends up through the ceiling connection portion and is connected with the civil ceiling, the second connector extends from left to right through the wallboard and is connected with the wallboard connection portion. The all-interior top board and wallboard connection structure for the unit bathroom according to embodiments of the invention needs no mounting space to be reserved and makes effective use of limited space.