Colds may cause conjunctivitis, so when there are symptoms of colds, they must be treated actively to avoid other complications. Colds are related to bacterial and viral infections, which can cause inflammatory reactions in the mucous membranes of the upper respiratory tract, including congestion, edema, and exudation of inflammatory substances, etc.; and since the seven orifices of human beings are all connected, when inflammation occurs in the neighboring organs, it can migrate to the conjunctiva, thus causing conjunctivitis. In addition, the body’s resistance will be reduced when you have a cold, which is also one of the triggering factors of conjunctivitis. When you have symptoms of cold, you should actively take standardized treatment, so as not to aggravate the condition and cause other diseases. When a cold is combined with conjunctivitis, it is necessary to treat the cold actively and at the same time to deal with the discomfort of the eye.