Fish oil is a common health food, there is no specific research to show that daily consumption can achieve the effect of disease, about the effect of fish oil on human health is still in the research stage. Fish oil is rich in omega-3 fatty acids, as well as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and some fish oils also contain vitamin A and vitamin D. The main function of fish oil is to provide these nutrients. Its main role is to provide the above nutrients. Fish oil is suitable for people with high blood lipids and has the effect of assisting in lowering blood lipids. It is not suitable for use by children, teenagers, pregnant women and lactating mothers. People who are allergic to any ingredients in fish oil are prohibited to consume fish oil. Although fish oil is rich in nutrients, but also need to pay attention to the daily life, when buying fish oil products, need to buy from the regular way, to avoid the existence of unqualified fish oil heavy metal exceeding the standard and other phenomena.