Water heating type vacuum drying oven

The utility model discloses a water heating type vacuum drying oven which comprises a drying oven body, the drying oven body is provided with a partition plate which divides the interior of the drying oven body into an equipment cavity and a drying cavity, the equipment cavity and the drying cavity are provided with an equipment cavity door and a drying cavity door respectively, and a plurality of layers of heating plates are evenly arranged in the drying cavity. A heat source channel used for heat source circulation is arranged in each heating plate, the upper portion of each heating plate is connected with a placing plate capable of being pulled out, and each placing plate is provided with a positioning assembly used for fixing the placing plate to the corresponding heating plate. The drying device has the beneficial effects that the placing plate capable of being pulled is arranged on the heating plate, after drying is completed, the placing plate can be taken out of the drying cavity through a taking-out