Moderate consumption of cod liver oil when platelets are low usually has no effect on the body and can be consumed normally. However, consumption of cod liver oil does not have the effect of treating low platelets. Platelet low refers to the peripheral blood platelet count is lower than the normal value (usually refers to less than 100X10^9/L) caused by a number of reasons, such as platelet production disorders (leukemia, aplastic anemia, etc.), platelet depletion or destruction of excessive (disseminated intravascular coagulation, etc.), platelet distribution abnormalities (hyper-splenism, etc.), as well as other diseases. Cod liver oil, a fatty ingredient extracted from the livers of marine fish, contains high levels of vitamins A and D. It can be used for the prevention and treatment of vitamin AD deficiency as well as diseases caused by its deficiency such as rickets and night blindness. Consumption of cod liver oil when platelets are low usually does not aggravate the condition, but it also has no therapeutic effect on the disease, so it is considered to be possible to consume cod liver oil in moderation. In the event of low platelets, it is necessary to actively consult the doctor and follow the doctor’s instructions for rational treatment.