The invention relates to a method for drying freshwater fishes, which comprises the following steps of: (1) removing fish scales, internal organs and fish heads from fishes serving as raw materials, slaughtering, cleaning, draining, cutting into slices and grading; (2) pickling at the temperature of between 10 and 18 DEG C for 40 minutes by taking table salt, chilli, pricklyash peel, ginger powder and cinnamon as base stocks; (3) draining the pickled raw material fish blocks, putting the drained fish blocks into a steam tunnel, and steaming at the temperature of between 90 and 100 DEG C and the humidity of between 80 and 90 percent for 5 to 8 minutes; drying in a microwave drying line at the temperature of 40 DEG C for 20 minutes, wherein the microwave frequency is between 2.45GH+/-25MHz,and the vacuum degree is between 98.2 and 99.2kPa; and drying by using water spray mist airflow at the wind speed of between 3 and 5 meters/second for 10 to 15 minutes, and gradually reducing the temperature from 80 DEG C to the normal temperature of 30 DEG C. The method is uniform in drying, the phenomena of scorched outside and underdone inside, overdrying or non-drying are avoided, and the drying quality of fish products is improved.