The utility model discloses an organic chlorine of crude oil distillation appearance, including distilling flask, condenser pipe, receiver, the distilling flask is located in the electrical heating cover, at the last port connection metal bottleneck of distilling flask, the condenser pipe is slant design down, and the oblique upper end of condenser pipe is connected with the metal bottleneck, and oblique lower extreme is then connected with the receiver. Condenser pipe upper end is to one side connected on the steam outlet that metal bottleneck lateral wall was offered through quick -operation joint, and the oblique lower extreme of condenser pipe passes through quick -operation joint and connects on the last end entrance of receiver. Still being provided with on the lateral wall of metal bottleneck and inserting the inside thermocouple of metal bottleneck to one side, metal bottleneck inner wall sets up electric heating. The utility model discloses resolve into two parts with the distilling flask: the bottom flask with take the tube neck of heating function, improvement moisture that this improvement can be by a wide margin evaporate, condenser pipe department uses the condensation of semiconductor refrigeration, firing equipment, the effectual control fraction of ability, underpressure distillation can be realized to receiver area valve and vacuum pump interface.