This study examines whether and how industrial robot adoption affects corporate pollution emissions. Using a sample of 163,301 firm-year observations from the Chinese industrial enterprises for the period 2004–2014, we find that firm’s robot adoption is positively related to pollution emissions reduction. Further mechanism tests show that the adoption of robots in production can improve a firm’s productivity and alleviate a firm’s financial constraint, thereby increasing the firm’s pollution emissions reduction. In addition, we find that the above-mentioned effect of robot adoption on a firm’s pollution emissions reduction is more pronounced for firms headquartered in regions with strong environmental regulations, firms that are high efficiency of pollution treatment and high technology-intensive, firms that have gone public and state-owned enterprises. Altogether, this study provides the first micro evidence on the relationship between robot adoption and corporate pollution emissions, providing significant implications for the world’s sustainable development.