The invention discloses a preparation method for a deep sea fish ball. The method comprises the following steps: preparing raw materials including fresh fish meat, auxiliary materials and flavoring agents; pulping; forming the fish ball, wherein the auxiliary materials include 100-200g ice blocks, 5-15g brittle phosphorus, 6-8g rich phosphorus, 30-60g salt, 1-8g special flavor enhancer, 15-35g white sugar, 2-6g fish essence and 500-1000g starch; the flavoring agents include the following components by weight part: 1.2-4.1 parts of meat tenderizer, 1.3-3.3 parts of sodium lactate, 1.1-3.4 parts of soybean sauce essence, 2.2-4.4 parts of roast beef essence, 1.6-8.9 parts of ethyl maltol, 1.8-3.8 parts of sodium ethylparaben, 1.8-6.4 parts of Maotai spirit essence, 1.2-10.1 parts of VB5, 2.1-4.6 parts of moon cake preservatives, 1.6-2.3 parts of magnesium gluconate, 1.2-4.6 parts of chocolate brown, 1.5-3.9 parts of water-soluble nipagin ester, 1.9-6.6 parts of super soybean sauce essence, 1.2-2.2 parts of sodium dehydroacetate, 1.4-6.3 parts of canned sorghum red meat, 1.1-3.3 parts of ferrous gluconate, 1.2-3.1 parts of roasted goose fragrance thickener and 1.3-3.5 parts of carmine. The preparation method provided by the invention is simple; the special flavoring agent is adopted, so that the flavor of the fish ball is unique; the market effect is good.