Height-adjustable handrail

The utility model discloses a height-adjustable handrail which comprises a first handrail body and a second handrail body, and the first handrail body is used for being fixed to a platform or the ground. The side, facing the platform or the ground, of the fixed first handrail is defined as the bottom side, the other side, away from the bottom side, of the fixed first handrail is defined as the top side, and the sides, located on the same vertical face and perpendicular to the top side and the bottom side, of the fixed first handrail are defined as the front side and the rear side. The bottom side of the second handrail is movably connected with the top side of the first handrail, so that the second handrail can turn over relative to the first handrail, an insertion hole is formed in the top side of the first handrail, and an insertion latch is arranged on the bottom side of the second handrail; the latch is inserted into the insertion hole, so that the overturned second handrail is fixed on the top side of th