The invention discloses a linseed oil water-locking skin-tightening mask and a preparation process thereof. The mask is prepared from the following raw materials in percentage by weight: 0.25 percent to 0.45 percent of cetearyl olivate, 1.3 percent to 1.7 percent of linseed oil, 0.3 percent of 0.7 percent of PCA polydimethylsiloxane, 2 percent to 6 percent of glycerinum, 3 percent to 7 percent of butanediol, 0.12 percent to 0.16 percent of carbomer, 0.03 percent to 0.07 percent of ethylenediaminetetraacetic acid, 0.05 percent to 0.15 percent of allantoin, 0.12 percent to 0.16 percent of triethanolamine, 0.03 percent to 0.07 percent of dipotassium glycyrrhizinate, 0.05 percent to 0.15 percent of sodium hyaluronate, 0.1 percent to 0.5 percent of bladderwrack, 0.31 percent to 0.35 percent of pulsatilla cernua, 0.31 percent to 0.35 percent of a zanthoxylum piperitum extract, 0.1 percent to 0.5 percent of grapefruit amide, 0.31 percent to 0.35 percent of an usnea barbata extract, 0.13 percent to 0.17 percent of argireline, 80 percent to 84 percent of water, 0.043 percent to 0.047 percent of a tasteless freshener, 1 percent to 3 percent of oat glucan, 1.3 percent to 1.7 percent of rhodiola rosea extracting liquid and 1 percent to 3 percent of cactus extracting liquid, wherein the total component is 101.213 percent to 101.217 percent and the redundant part is loss. The linseed oil water-locking skin-tightening mask has a weight-reducing function, is sun-resistant and frost-proof, is convenient for skin to absorb, enable the skin to become tender quickly, can solve the skin problems quickly, and is simple to prepare.