The invention relates to the technical field of 
food processing, and discloses a steam-powered 
steamed bread machine which comprises a 
machine body and an upper cover covering the 
machine body, an outer cylinder, a 
steamed bread cylinder and a steam generator are arranged inside the machine body, the 
steamed bread cylinder is arranged inside the outer cylinder, the upper cover is sealed with the top of the outer cylinder, a gap is formed between the inner side wall of the outer cylinder and the outer side wall of the steamed bread cylinder, and the steam generator is arranged on the periphery of the outer cylinder and is connected with the lower portion of the outer cylinder through a steam connecting 
pipe. The invention further discloses a steamed 
bread making method based on the steam-powered steamed bread machine. According to the steam-powered steamed bread machine and the steamed 
bread making method, the steam generator for generating steam and the steamed bread cylinder for containing steamed breads are arranged in different containers, so that the 
liquid water and the gaseous steam can be separated effectively, the steam enters the steamed bread cylinder through the lower portion of the gap between the outer cylinder and the steamed bread cylinder, the inner area and the outer area of the steamed bread cylinder are filled with the steam, the 
steam temperature difference in the steamed bread 
steaming space can be eliminated effectively, and the surface color and luster of the steamed bread are improved; meanwhile, too much condensate water generated in the steamed bread 
steaming space can be avoided.