The utility model discloses a three-seat bench integrating a three-point safety belt. The bench comprises a rectangular seat assembly which is connected with a backrest assembly through left and right angle adjusters, wherein three safety belt lower fixing points are arranged on the rectangular seat assembly; left and right longitudinal beams are arranged between a U-shaped framework and a rear cross beam, and a front cross beam is arranged between the left and right longitudinal beams; left and right bench front legs are arranged at the lower part of the U-shaped framework, left and right rear supporting locks are arranged at the lower parts of the two sides of the rear cross beam and connected with left and right floor lock catches on a car body floor respectively; left and right brackets are arranged between the U-shaped framework and the rear cross beam and are connected with the connecting plates of the left and right angle adjusters respectively; a supporting column is perpendicularly arranged on the backrest assembly above the left angle adjuster, and a safety belt upper fixing point is arranged at the top of the backrest assembly above the supporting column. The bench has the advantage that the technical difficulty that the safety belt upper fixing point cannot be mounted on a car roof is overcome.