Evaporator adopting vacuum thermal insulation and electronic cigarette

The invention discloses an evaporator adopting vacuum thermal insulation and an electronic cigarette. The evaporator comprises a heating unit and a thermal insulation pipe. The pipe wall of the thermal insulation pipe comprises at least two layers of glass. A vacuum cavity is formed between the adjacent layers of glass. A storage space is defined by the glass on the inner side and provided with an outlet allowing smoke to escape, and the heating unit is covered with the thermal insulation pipe through the glass on the inner side and used for heating an object in the storage space. The thermal insulation material of the evaporator is changed into the vacuum glass from common glass fiber cotton, glass fiber cloth, aerogel and the like, so that the thermal insulation and preservation performance of the evaporator is greatly improved. Meanwhile, the shape of the vacuum glass is fixed, the vacuum glass is easy to assemble, and the situation that user experience is affected by abnormal smells, dust and the like is avoided. In addition, a user can be allowed to observe the decomposition condition of the object in the storage space through the transparent vacuum glass, and use is more convenient.