Two-month-old babies with low fever and spitting up may be caused by acute gastroenteritis, meningitis and other factors, which can be treated by improving living habits, medication and other measures. 1. Acute gastroenteritis: acute inflammation of the gastrointestinal mucosa caused by the invasion of pathogenic bacteria, which can be manifested as vomiting, fever, abdominal pain and other symptoms. It can be treated by improving living habits, such as eating smaller meals, continuing breastfeeding and increasing calorie intake. It can also be treated by applying some medicines such as Bacillus subtilis dictyostelium, montelukast and so on. 2. Meningitis: refers to diffuse inflammation of the soft meninges. For infants and young children, it can be manifested as fever, vomiting, irritability, etc. Fever can be relieved by physical cooling, etc. Drugs such as acyclovir, ceftriaxone sodium, etc. can also be used in a targeted manner. There are many reasons that lead to two-month-old babies spitting up with a low fever, you should go to the hospital in time to improve the relevant examination to clarify the cause of the disease, symptomatic treatment under the guidance of the doctor, to avoid unauthorized use of medication or treatment. The above drugs need to be used in accordance with medical advice.