Fish oil has the effect of regulating blood lipids, patients with Hashimoto’s hypothyroidism can eat fish oil, will not significantly aggravate the condition, but there is no alleviation of the condition, can not replace the use of drugs. Fish oil contains DHA, EPA, vitamin E and other nutrients, can play a role in regulating blood lipids, but it is only health care, can not be used as a therapeutic drug. Hashimoto’s thyroiditis combined with hypothyroidism patients can eat fish oil when necessary, will not significantly aggravate the condition, but also has no alleviating effect on the condition, can not replace the drug treatment. Patients diagnosed with Hashimoto’s thyroiditis and hypothyroidism should actively cooperate with the doctor’s treatment and maintain a healthy diet.