With the deepening of relevant researches, it is considered that Mycoplasma pneumoniae-specific antibody, C-reactive protein, and procalcitonin can play an important role in the diagnosis and efficacy evaluation of Mycoplasma pneumoniae pneumonia in children and are important supplementary indicators for the isolation and culture of Mycoplasma pneumoniae [12–14]. The gene discussed is CRP; the disease is Mycoplasma pneumoniae pneumonia.