The invention provides an aluminum alloy handrail device for an escalator. The aluminum alloy handrail device for the escalator comprises an upper body and a lower body, wherein a lower vertical pillar of the upper body is clamped to an upper cavity of the lower body; the upper body and the lower body are screwed and fixed to form the aluminum alloy handrail device; two sides of the lower body extends downwards and outwards from the upper cavity to form fin-shaped clamping parts; a clamped body is placed between the clamping parts. The aluminum alloy handrail device for the escalator has the advantages that a stainless steel handrail bracket is fixedly connected to an aluminum alloy handrail bracket through rhombus bolts, the strength is higher; glass is located at a central axis of the aluminum alloy handrail bracket, the glass is free of lateral force, and the safety is improved.