The reasons why rhinitis is more serious in summer include: first, the summer weather is hot, and the temperature is more humid, the human body sweats especially a lot, if the patient does not pay attention to the supplement, the secretion of sweat glands will consume more energy of the body, resulting in the patient is prone to a decline in resistance, viruses, bacteria are prone to invade the patient’s nasal mucosa, so summer rhinitis is very common, once the rhinitis will be more serious. The second, the summer weather is hot, the patient’s appetite is low, eat less, resulting in the patient’s body protein, energy and other intake is less, will lead to the patient’s resistance to decline, the invasion of viruses and bacteria, will also be easy to induce rhinitis situation. Third, the summer weather is hot, patients do not rest well at night, it is easy to get on fire, resulting in the daytime mental state is not very good, always on fire also easy to induce patients to develop rhinitis. Fourth, the air is more humid in summer, which is ideal for the growth of dust mites and other microorganisms. In summer, as many flowers bloom, pollen floats in the air in large quantities, and pollen is one of the allergens that patients inhale in their nasal passages, which can also easily trigger the onset of allergic rhinitis in patients. All in all, rhinitis is very common in summer and patients should do their best to prevent and protect themselves.