Vacuum freezing and drying device is a drying method for quality improvement, and it is a drying device for high quality bio products. It is a drying method that is more advanced than hot or cold air drying. Pre-freeze and self-freeze products are vacuumed below saturated steam pressure in the drying chamber to sublimate moisture or solvents in the product to dry. Cold trap (an evaporator that collects water vapor in ice) maintains a temperature from -30 to -85°C or -100°C during organic solvent and can be set according to the drying product. The cold trap cooling coil retains the vacuum pump function by preventing water inflow into the vacuum pump with evaporated water etc. attached to the product.