Sodium bicarbonate ear drops for cerumen impaction may be a mixture of cerumen and drops is normal; it may also be caused by inflammatory reaction and purulent otitis media, which is abnormal. Sodium bicarbonate ear drops are alkaline and can combine with acidic metabolites to dissolve earwax, after the drops the ear runs yellow water may cerumen and drops are normal. It may also be purulent otitis media, this alkaline solution can not completely improve the local suppurative infectious diseases, so the phenomenon of yellow water, is an abnormal phenomenon. Sodium bicarbonate ear drops can soften the cerumen, after ordering the drops is required to use hydrogen peroxide rinse, drugs have a certain degree of irritation, if you do not rinse, long time in the inside is prone to cause adverse reactions. It is forbidden to use it when you are allergic to the ingredients of sodium bicarbonate ear drops or when there is inflammation in the external ear canal. If the patient in the use of sodium bicarbonate ear drops after the ear drops have yellow water phenomenon, need to go to the regular hospital ENT department for follow-up, listen to the doctor’s advice, choose the drug for treatment.