Disclosure provides a substrate processing apparatus, an operating method thereof, and photo spinner equipment, the substrate processing apparatus being capable of preventing fumes of processing liquid from blocking a duct. The substrate processing apparatus supplying processing liquid to a substrate to perform processing includes a substrate support unit configured to support the substrate, a liquid supply unit configured to supply liquid to the substrate, and a liquid recovery unit configured to recover the liquid from the substrate. The liquid recovery unit includes a recovery cup formed to surround the substrate support unit and an air injection unit configured to inject air to an internal space of the recovery cup.