The invention discloses a display screen device. The display screen device comprises a mounting rack and a display screen, wherein a sinking groove which is connected with the display screen in a matched manner is formed in the right side wall of the mounting rack; a first slipping cavity and a second slipping cavity are symmetrically formed in the mounting rack vertically and positioned on the left side of the sinking groove; an opening sliding cavity is formed in the mounting rack and is positioned between the first slipping cavity and the second slipping cavity; a communication groove which communicates with the opening slipping cavity is formed between the bottom of the left side of the first slipping cavity and the top of the left side of the second slipping cavity; closing grooves which extend downwards are respectively formed in the bottom of the right side of the first slipping cavity and the bottom of the right side of the second slipping cavity; each closing groove is provided with an aligning groove which communicates with the closing groove; each aligning groove extends in the left-right direction; the inside of each aligning groove is slidably connected with a sliding block; guide grooves are symmetrically formed in a left extension section of each aligning groove vertically; projections which extend into the corresponding guide grooves are symmetrically arranged on the left side of each sliding block vertically; and a right extension section of each aligning groove communicates with the mounting rack and communicates with the sinking groove. The display screen device is simple in structure; time and labor are saved during mounting of the display screen device; and the display screen device is convenient to maintain.