The invention discloses a two-stage drying system for microorganism fermented feed. The two-stage drying system for the microorganism fermented feed comprises a primary drying cabin, a drying platform, a hot air device, a secondary drying cabin, a first conveying pipeline, a first exhaust fan, a supporting mechanism and a vibration motor; the drying platform is arranged in the primary drying cabin, and a plurality of air outlets communicating up and down are formed in the drying platform and are distributed uniformly; the hot air device is used for supplying hot air for the drying platform through the air outlets from bottom to top; the secondary drying cabin is in a cylinder shape and is internally provided with three heating walls, and the inner space of the secondary drying cabin is divided into three fan-shaped drying cavities by the three heating walls; one end of the first conveying pipeline communicates with the upper part of the primary drying cabin, and the other end of the first conveying pipeline communicates with the lower part of the secondary drying cabin; the first exhaust fan is arranged in the first conveying pipeline; the supporting mechanism comprises four supporting vertical pillars and four supporting springs, and the drying platform is fixedly arranged at the upper ends of the four supporting springs; and the vibration motor drives the drying platform to vibrate up and down. According to the two-stage drying system for the microorganism fermented feed, caking of the fermented feed can be avoided, and the drying efficiency can be improved.