A laminated film for a reflection plate which comprises a layer A and a layer B, the layer A comprising a polyester substantially not containing an antimony element and preferably containing 1 to 25 wt % of inert particles having an average particle diameter of 0.3 to 3.0 mum and a layer B comprising a polyester preferably containing 31 to 80 wt % of inert particles having an average particle diameter of 0.3 to 3.0 mum. The above laminated film has a practically satisfactory reflection capability for a visible light region, can make a film with stability even when inert particles are added ina high concentration, and can be suitably used as a base material for a reflection plate being less prone to generate defects in a fiber form, for use in a liquid crystal display or an internal lighting illumination signboard.