The invention discloses an evaporative crystallization device used for experiment teaching. The evaporative crystallization device used for experiment teaching comprises a digital display heating andstirring device, wherein a supporting column is arranged on an operation table-board of the digital display heating and stirring device, a supporting disk is arranged on the upper portion of the supporting column, a supporting and heating disk is arranged on the lower portion of the supporting column, the supporting disk is located over the supporting and heating disk, a raw material liquid storage tank is arranged on the supporting disk, the raw material liquid storage tank is connected with a raw material liquid inlet of a heat exchanger through a raw material liquid output pipe, a raw material liquid outlet of the heat exchanger communicates with a liquid dropping device through a raw material liquid input pipe in a sealed mode, and the liquid dropping device is connected with an evaporation bottle in a sealed mode. The experiment device is simple in structure and little in occupied space; free assembly and disassembly are convenient, carrying is convenient, and the experiment device can be used for conducting demonstrative experiments, and can be used as experiment equipment of a laboratory; the experiment device does not need fluid transportation equipment, so that the equipment cost and the operation cost are saved; and by adding the double-pipe heat exchanger, the purposes of saving energy and protecting the environment are achieved.