In this study, the photocurrent characteristics of plasma sprayed TiO₂ coatings have been investigated according to additive transition metal (Fe, Mn, Nb powder) and heat treatment conditions. The plasma sprayed TiO₂ coatings by heat treatment at 400℃ and 90 min had the higher photocurrent at ultraviolet light, no photocurrent at visible light. The photocurrent of plasma sprayed TiO₂ coatings added by Fe, Mn, Nb (named by plasma sprayed TiO₂ composite coatings) was lower than that of plasma sprayed TiO₂ coatings at ultraviolet light, as was low in intensity ratio of XRD(101)/(110). and the atomic percentage of oxygen by plasma sprayed TiO₂ composite coatings was higher than that by plasma sprayed TiO₂ coatings. The photocurrent of plasma sprayed TiO₂ composite coatings in heat treatment at 400℃ and 90 min was higher than that of plasma sprayed TiO₂ coatings in same heat treatment conditions at ultraviolet and visible light, as was high in oxygen affinity by heat treatment.