The invention discloses a preparation method for special-shaped luminous high-strength nylon industrial yarns, belonging to the field of organic synthesis and material preparation. According to the luminous industrial yarns, A-class fatty acid and aromatic acid are compounded so as to form a europium organic carboxylic acid complex, then the europium organic carboxylic acid complex, stearate and inorganic long-lasting phosphor form a thermal stable light-emitting component, and the industrial yarns are designed through a different cross section spinneret and are realized through a high-strength industrial yarn spinning technology. Compared with traditional luminous fibers, the industrial yarns use less luminous additives, but have a high luminescent property and mechanical strength; compared with traditional industrial yarns, the luminous additives have thermal oxidization stability, thereby facilitating spinning at high temperature, and the different cross section property of the fiber further improves the luminescent property. The polyamide luminous fiber has a bright application prospect in fields like awning cloth of important equipment, tents, parachutes, police uniform and costumes.