Abstract: The present disclosure provides a potty chair. The potty chair includes an upper main body and a lower main body. A sitting platform is arranged at an upper end of the upper main body, an excretion hole and an excrement container mounted in the excretion hole and configured for accommodating excrement are arranged in the sitting platform. The lower main body is detachably connected to a lower end of the upper main body and configured for supporting the upper main body. A first accommodating cavity is formed in the lower main body. When the upper main body is separated from the lower main body, a volume formed by stacking the upper main body and the lower main body is reduced by placing the lower main body upside down and placing the lower end of the upper main body in the first accommodating cavity.