To inexpensively provide a method for inexpensively manufacturing a lighting door also usable for a sliding door since the number of parts projecting from the front surface of the lighting door is extremely small, having excellent strength and durability, requiring only one type of door body even if there are a plurality of the thicknesses of the door body and the types of light-permeable members, advantageous with respect to production cost since in-process inventory and part inventory at a plant are required less, enabling a light-permeable member to be firmly and reliably fixed even if a door working dimensional accuracy is slightly low or working accuracy when the light-permeable members are fitted is slightly low, and having excellent quality, accuracy, and aesthetic appearance.

A door body which is formed by joining decorative sheets on both surfaces of a core, respectively, and which has predetermined width, height, and thickness, and light-permeable members each of which is divided into two parts in the thickness direction and each of which has an engagement projection on the respective side surfaces are prepared in this method. Openings allowing the door body to extend therethrough are formed in the door body at predetermined positions. The light-permeable members are fitted into the openings from both surfaces of the door. The light-permeable members are press-fitted and fixed to the openings by the engagement projections.