There is a normal anatomical structure between the pharynx and the ear called the eustachian tube, which can relieve the pressure inside the eardrum to prevent it from rupture. If coughing causes ear pain, most of it is due to the impact of the eustachian tube in the pharynx on the eardrum causing pain. This pain can be relieved by treating the symptoms of the pharynx, such as using some throat drops or Golden Voice Throat, as well as grass coral tablets to relieve the symptoms of the pharynx. In addition, since cold is a self-limiting disease, usually the symptoms will improve on their own in about 7-10 days, so as long as you pay attention to drink more water to prevent the throat from drying out and keep the eustachian tube open, the symptoms will disappear naturally.