The drying temperature of the drying room special for drying of pumpkin seeds is generally about 75 ℃, and the drying time is about 4 hours. During the drying time, it is also necessary to start the exhaust machine to remove the moisture, and it should be discharged every 30 minutes. The discharging shall be continue for 1-2 minutes at each time. Finally, the pumpkin seeds should be mixed with vegetable oil, and the oil amount is equal to 1% of the raw material. When mixing the vegetable oil, use an oil brush to bush the oil on the pumpkin seed evenly. When the surface of the pumpkin seed is slightly dried, the drying process is completed.