This invention relates to a sort of integral dry and dewatering set of the microwave and vacuum system, it consists of a hothouse of hermetic estate which is used to pose the materiel, the on-off door body which is propitious to gain and put materiel is fitted on the wall of the hothouse, the microwave produced by the microwave generator can cross the wall of the hothouse and it use the microwave to heat the materiel of the hothouse, there has the vacuum connector tub which is extended to the hothouse on the wall of the hothouse, the vacuum connector tub connects with the vacuum-pumping set. Because thin invention makes the microwave heating system connects with the vacuum system in the organic way, the speed of its dryness and condensation is fast, the temperature is low (25 to 45 deg. C), It very fit to the use of the lab, and fit to desiccate and condense the multifarious hydrous, and specially fit to food materiel of the heat sensitivity, and so on, and it is widely used to desiccate and condense the multifarious hydrous in the way of small-scale in the lab, such as the food, the medication, the chemical production.