What will happen if a cold in late pregnancy drags on for a long time is mainly related to the individual situation of the pregnant woman and should be analyzed specifically. If the cold is caused by viral infection, pregnant women in late pregnancy can cure themselves by drinking more water and paying attention to rest; at the same time, they also need to maintain indoor air circulation, and they can take Chinese medicines that have the effect of clearing away heat and detoxifying the toxin and antiviral effect appropriately. However, if the cold develops further, for example, the cough worsens and develops into bronchitis and pneumonia, the recovery time is slower. In addition, if the patient is combined with streptococcal infection, glomerulonephritis and infective endocarditis will easily occur. Glomerulonephritis often manifests as facial edema or lower extremity edema, oliguria, and fever. Infective endocarditis is mainly manifested as fever, fatigue, palpitation, and even chest tightness, etc. Patients need to pay attention to observation. Therefore, if a patient with late pregnancy flu has fever, it is recommended to go to the hospital for blood routine and C-reactive protein examination, and the professional doctor will formulate a rationalized diagnosis and treatment plan according to the patient’s individual situation.