The symptoms of heavy breathing while sleeping are not obvious snoring symptoms, which are often associated with infectious inflammation of the nasal cavity and sinuses or allergic disease factors. These nasal inflammatory and allergic disease factors will lead to a certain degree of congestion, swelling or edema of the turbinate mucosa, resulting in the narrowing of the nasal breathing passages, which will cause an increase in the patient’s breathing resistance and cause a certain degree of nasal congestion. But this nasal congestion symptoms are not particularly serious, sometimes during the day when the body is upright may not feel too obvious, but in the evening when the body is lying down during sleep, the congestion, swelling or edema of the turbinate mucosa may further aggravate, there will be varying degrees of nasal congestion symptoms, breathing will feel increased resistance, obvious effort, the breathing sound will become heavier.