Antibodies can usually be detected in 3 to 5 days after mycoplasma infection. Mycoplasma is an extracellular survival of a microorganism, has a certain degree of infectiousness, in the clinical common disease-causing mycoplasma mainly includes Mycoplasma pneumoniae, Mycoplasma genitalium, Mycoplasma hominis and Mycoplasma unguiculatum, respiratory infections and urinary tract infections mainly. Mycoplasma pneumoniae is transmitted through respiratory droplets, and Mycoplasma genitalium, Mycoplasma hominis, and Mycoplasma unguiculatum are transmitted through sexual intercourse. Mycoplasma infections are self-limiting and can be cured with treatment, but some patients may develop related complications, such as meningitis, myelitis, myocarditis and other life-threatening conditions. Mycoplasma infection can produce antibodies in about 3~5 days, and Mycoplasma pneumoniae is recommended to consult the respiratory department, and Mycoplasma genitalium is recommended to consult gynecology or urology department.