The invention relates to a health food with a function of relieving visual fatigue and a preparation method thereof, belonging to the technical field of health foods. The health food with the function of relieving visual fatigue is characterized in that active ingredients and additives are used for preparing the health food into soft capsules, hard capsules, oral liquid or tablets, wherein the active ingredients comprise the following raw materials: flaxseed oil or perilla oil, beta-carotene or vitamin A, lutein, zeaxanthin, vitamin E, ginkgo leaf extract and grape pip extract or cowberry extract; when the health food is prepared into the soft capsules, an emulsifying agent is used as the additive; when the health food is prepared into the hard capsules, a diluting agent is used as the additive; when the health food is prepared into oral liquid, a preservative, a flavoring agent, an emulsifying agent and water are used as the additives; and when the health food is prepared into the tablets, a diluting agent and a disintegrating agent are used as the additives. The health food prepared by the invention has the function of relieving visual fatigue.