4 and a half year old child stomach pain fever 38.5 ℃, blood routine is fine can be seen in the digestive tract disease, in addition to the digestive tract other febrile diseases, generally need to be treated, how to treat need to be based on the cause of the decision. 1. digestive tract diseases: such as acute appendicitis, in the early stages of the disease, the above phenomena can occur, perfect blood tests can be normal, part of the C-reactive protein increase, with the progress of the disease, there can be persistent abdominal pain, recurrent fever, white blood cells and other elevated. If this disease is considered, it is necessary to closely observe the condition, review dynamically and carry out treatment, such as using ibuprofen to reasonably reduce fever, using cefixime to fight infection. 2. In addition to other febrile illnesses outside the digestive tract: such as influenza children, clinical recurrence of fever, elevated temperature can affect gastrointestinal function abdominal pain, mostly in the body temperature can be normalized after abdominal pain can be significantly relieved. Blood tests may be normal at the beginning. If you consider this disease need oral treatment such as oseltamivir phosphate, fever with ibuprofen or acetaminophen for symptomatic antipyretic, discretionary oral Clostridium typhimurium live bacteria to regulate the intestinal flora, in order to alleviate the symptoms. It is recommended that children with the above conditions should consult a specialist to assess their condition and guide treatment. The above medications should be used in accordance with medical advice.