The invention discloses a sliding rail type low-barrier linkage shower room and a mounting method. The sliding rail type low-barrier linkage shower room comprises an upper rail, a lower rail, fixed glass, drive shower glass and driven shower glass. The lower rail is correspondingly arranged on the driven shower glass, and a sliding block unit is arranged on the lower rail. The sliding block unit comprises a fixed connecting part, a sliding connecting groove and a sliding guide position. The fixed connecting part is arranged corresponding to the driven shower glass. The sliding connecting groove allows the drive shower glass to be arranged therein and linkage is formed. The sliding guide position is located on the lower rail to achieve sliding fit. According to the sliding rail type low-barrier linkage shower room and the mounting method, the structure is simple and easy to achieve, low-barrier rail design is achieved, the height can be reduced to 10 mm, and a user can get in and out of the shower room conveniently. In addition, single-rail modular mounting of the shower room is achieved, the mounting process is simple, no locating or limiting structure is needed, noise is low, linkage of the drive shower glass and the driven shower glass is easily achieved, sliding is smooth and stable, mounting, adjusting, maintaining and dismounting are easy and convenient, and the needs for use and assembly can be met easily.