The invention relates to the field of processing food, in particular relates to hotpot seasoning bags with a seafood coconut flavor and a preparation method thereof. The hotpot seasoning bags consist of a basic soup material, a hotpot sauce material and a soup dried product, wherein the basic soup material is prepared from the following components: coconut juice, seabed coconuts, old hen meat, prawns, crab meat, gingers, garlic, white peppers and salts; the hotpot sauce material is prepared from the following components: rapeseed oil, dried scallops, the crab meat, shrimp meat, onions, the salts, gourmet powder, chicken essence, white sugar, Baijiu (Chinese alcohol) and oyster sauce; the soup dried product is prepared from the following components: dried crab legs, dried prawns and the seabed coconuts. A hotpot tastes freshly and has balanced nutrition, meets the requirement of modern people, and is safe and sanitary. Seafood and tropical coconuts are blended with the hotpot, and portable seasoning bags are prepared. The seasoning bags disclosed by the invention have the advantages that materials are strictly selected, the proportioning of a formula is scientific and reasonable, requirements on all aspects such as nutrition, tastes, and color and lustre can be met, the process is exquisite, the flavor is intense, the mouthfeel is palatable, and requirements on tastes in different areas can be met.