The invention discloses a processing method of seasoned instant sea cucumber, comprising the steps of the decontamination of raw sea cucumber, pressure boiling, low temperature fermentation, cutting, seasoning, vacuum packing, super high pressure sterilization, etc. The myofibril of the sea cucumber tissue becomes thinner after the process of fermented preparation, the inter-place between the fiber is large, organization structure is even, the volume of the sea cucumber is large, tenderness is improved and water capacity is enhanced, being conducive to the absorption of nutritional components; the sea cucumber tastes good after being seasoned by two liquid condiment; the super high pressure sterilization comparatively maintains the original favor, shape and nutrition of the instant sea cucumber product and the shelf life is greatly prolonged. The instant sea cucumber processed and produced by the method has no ocean fishy smell, delicious with good taste, proper hardness and softness, easy to carry and instant, basically maintaining the original nutritional components of the sea cucumber. The product can be preserved for a long time with freshness, nutrition, convenience and safety and overcomes the shortages of the coarse texture and the poor taste of the sea cucumber processed by the current technology.