The present invention mainly relates to the structure of a microwave drier, especially a structure of a microwave vacuum drier. A microwave vacuum continuous drier with two drying chambers, includes a tank (A), a hoisting system (8), a vacuum system (9), wherein a delivery device (6) is disposed in the tank (A), and a discharging device (5) below the delivery device (6), characterized by including a microwave vacuum drying chamber (A3) in the tank (A), a microwave heater system (1) on the wall of the tank (A) of the microwave vacuum drying chamber (A3), a separating plate (2) on one side of the microwave vacuum drying chamber (A3) to form a vacuum cooling solidifying chamber (A4). The driving belt (64) of the delivery device (6) traverses the window (21) arranged on the separating plate (2). On one end of the tank (A) is arranged with the microwave vacuum drying chamber (A3) and on the other end is the vacuum cooling solidifying chamber (A4). The separating plate (2) separates the two chambers to make the temperature have the obvious gradient. The invention adopts the way of microwave radiation heating, utilizing the characters of microwave high efficiency, easy to control, antisepsis, sterilization, fast heating, even heating, fast dehydration, preserving to reduce the power waster and advance the efficiency.