Weakly positive IgM for Mycoplasma pneumoniae suggests that there may be Mycoplasma pneumoniae infection in the body, and if symptoms of Mycoplasma pneumonia are also present, a preliminary diagnosis of Mycoplasma pneumonia can be made. Mycoplasma pneumoniae antibody test includes IgG antibody and IgM antibody, when there is a weak positive IgM antibody, it means that there is currently suspected Mycoplasma pneumoniae infection. If symptoms such as cough, fatigue, sore throat, headache, etc. are present at the same time, the preliminary diagnosis of Mycoplasma pneumoniae pneumonia is established, and early and aggressive treatment should be carried out. For the treatment of Mycoplasma pneumoniae pneumonia, it is recommended to start using sensitive antibiotics at an early stage. Before the results of the drug sensitivity test come out, macrolide antibiotics are preferred, such as erythromycin, roxithromycin, azithromycin, and so on. After the results of the drug sensitivity test come out, the corresponding sensitive antibiotics should be used for treatment. Mycoplasma pneumonia patients need to follow the doctor’s instructions, under the guidance of the doctor for treatment, not self-medication.