Deep caries filling after 2 days has been hidden pain, may be a normal reaction after filling, regular observation can be, without special treatment; but if the local infection inflammation, should be timely anti-inflammatory, and for the phenomenon of food blockage, need to be cleaned up in a timely manner, if necessary, should be oral painkillers. 1. Normal reaction: fillings need to use some filling materials and drugs, in the short term may produce irritating reactions, causing hidden pain, is a normal performance, without special treatment, but pay attention to oral hygiene, prevention of secondary infection. 2. Infection and inflammation: For not paying attention to local hygiene after surgery, causing inflammatory reaction and inflammatory exudation, it will also cause hidden pain. Mild cases can be temporarily anti-inflammatory through oral cefixime, cefaclor and other drugs, such as serious condition, pain is unbearable, can follow the doctor’s instructions oral ibuprofen pain. Go to the hospital in time for root canal treatment. 3. Food impaction: after filling the teeth within a short period of time do not pay attention to reasonable diet, food impaction may cause hidden toothache, now need to clean up the food in time, and local rinsing. Deep caries filling has been hidden pain for two days, it is recommended to observe for a period of time, if the symptoms persist for a long time, it is recommended to consult a doctor in time.