The invention discloses an adjustable supporting device for the ophthalmic surgery. The adjustable supporting device comprises a fixing frame and an adjustable supporting piece which is connected to the fixing frame in a rotating and / or sliding mode and used for upwards supporting an operating towel covering the snout. The supporting device is easy to operate, capable of rising and falling and capable of being adjusted in a 360-degreerotating mode, the size of the supporting face can be adjusted according to the individual conditions of patients to meet operating requirements, the operating time is shortened, the working efficiency of doctors is improved, meanwhile, the sense of interfering with breathing caused by discomfort such as the sense of facial pressure and labored breathing of the patients in the operating process is avoided, the pain of the patients is relieved, the comfort level of the patients in the operating process is enhanced, smooth operation is guaranteed, and the supporting device can be contracted, folded and stored after being used and is small in size, and small space is occupied.