The utility model discloses a fixing device for LCD liquid crystal screen detection. The device comprises a bottom plate, moving wheels are arranged on the lower side of the bottom plate, a supportingplate is fixedly welded to the upper side of the bottom plate, a rotating column is arranged at the upper end of the supporting plate, a mounting block is arranged on the lower side of the rotating column, a rotating handle is arranged at one end of the rotating column, and a mounting plate is fixedly welded to the other end of the rotating column; adjusting screw rods, clamping and fixing springs, connecting blocks, guide rods, clamping and fixing rods and clamping and fixing plates are arranged at the two ends of the upper side of the placing strip plate; the display screen with the same thickness can be conveniently fixed; the clamping and fixing can be performed through the elastic force of the clamping and fixing spring; a rotating column and a rotating handle are arranged on one side of the mounting plate, a clamping groove is formed in the outer side of the rotating column close to the supporting plate, a limiting rod, a limiting spring and a mounting block are arranged on oneside of the supporting plate and located on the lower side of the rotating column, the inclination angle of the display screen can be conveniently changed by rotating the rotating column, and inconvenience caused by manually holding the display screen to overturn back and forth is avoided.