The invention provides a processing method of instant crisp fish. The method is performed according to the following ten steps: step one, fish selection, dissection and cleaning; step two, strip cutting; step three, salting; step four, drying; step five, aging; step six, frying; step seven, marinating; step eight, vacuum packaging; step nine, sterilizing; and step ten, cooling. Instant crisp fish processed through the method has no earthy taste, original flavors are maintained, the oil infiltration capacity during frying is small, the fish is free of greasy feelings when eaten, globular proteins in fish meet after aging are reorganized to form thread-shaped lean meat structures, the chewing feeling is good, the frying time is short, the fish is crisp and tender, tastes are good, anise and pepper are put in a leaching liquid mode to be seeped into fibers in fish meet, flavors are rich, and the appearance has no particles. According to the processing method, original flavors and nutrition values of fish meet are maintained, and the instant crisp fish is convenient to carry and eat.