Heat insulation cup

A heat insulation cup comprises a cup cover, an accommodating cavity and a cup body. The cup cover is provided with upper inner screwed threads and lower inner screwed threads inside, the accommodating cavity is provided with accommodating cavity outer screwed threads, the cup body is provided with cup body outer screwed threads, the cup cover is connected with the accommodating cavity outer screwed threads through the upper inner screwed threads and is connected with the cup body outer screwed threads through the lower inner screwed threads, and the cup cover, the accommodating cavity and the cup body are integrated through screwed connection. The heat insulation cup is capable of separating tea from water, nutrition of tea is prevented from losing since the tea is soaked in the water for a long term, the health caring function of the tea is guaranteed, the tea is prevented from flowing to the mouth of a user with the tea when the user drinks the brewed tea, and the aesthetic mood of people can be improved when people drink tea through the heat insulation cup accordingly; when the cup is washed as required, the cup cover, the accommodating cavity and the cup body can be disassembled and washed cleanly, and people can use the heat insulation cup in healthy and sanitary manners.