Provided is a thermoplastic resin composition which includes: a base resin including a polyarylene oxide-based polymer at 100 parts by weight; and an additive including one or more selected from the group consisting of compounds represented by Chemical Formula 1-1 to Chemical Formula 1-3 at 0.1 to 5 parts by weight, and can be used for producing a thermoplastic resin molded article which exhibits an excellent coloring property and thus has an aesthetically pleasing appearance.