Cold has a certain self-limiting, generally speaking, about a week will gradually improve, or even cured, cold is not good for a long time mainly consider the following diseases: 1, allergic rhinitis: If there are long-term cold-like symptoms, such as nasal congestion, sneezing, runny nose, general discomfort, itchy skin and other symptoms, belong to allergic rhinitis. You can use anti-allergy drugs, such as chlorpheniramine maleate, ketotifen fumarate tablets, cetirizine, loratadine, etc. for anti-allergy treatment, and if necessary, you can use nasal spray hormones, such as ryanodine, and some patients are also treated with leukotriene receptor antagonists such as montelukast, etc. You can also use Chinese herbal medicine for identification treatment, which is generally formed due to windy contracture and deficiency of both lungs and spleen, and you can use wind dispelling The drugs can be used to dispel the wind, such as Xin Yi, Dahurica dahurica, Pierced Dragon, Su Ye, Fang Feng, etc., plus drugs that benefit the lung and replenish the spleen, such as Astragalus, Atractylodes, etc., to benefit the lung and strengthen the spleen, dredge the wind and open the orifices. 2, myocarditis: if the cold is not good for a long time, symptoms such as chest tightness, be alert to whether it is complicated by myocarditis, etc., must be diagnosed and further treated.