When a seven-year-old child has symptoms of toothache, the first thing to do is to identify the cause and go to a professional dentist to check it out. As seven-year-old children are already in the period of tooth replacement, pain may occur when teeth are replaced, especially when the late eruption of sixth-age teeth may also occur, this pain is a physiological pain if it is not particularly severe, there is no need for special treatment. The more common clinical situation is the tooth pain caused by tooth decay in seven-year-old children, for this case, you can take local dental film to check the specific decay of teeth, and also check the situation of permanent teeth below the decayed milk teeth. If it is the front incisor and the permanent tooth underneath is found to be erupting soon, then it is possible to consider extracting the decayed milk tooth, closely observe the corresponding gap and wait for the permanent tooth to erupt. However, if the decayed milk cuspids and milk molars at the back, we usually consider to treat the pain by filling or root canal treatment, because these teeth still have a long time before the tooth replacement. There are also children who have toothache symptoms, but do not have the condition to seek medical attention immediately, then we can consider taking some analgesic drugs, clinically for seven-year-old children, we can generally consider applying ibuprofen suspension for analgesia, which has relatively less side effects and has antipyretic and analgesic effect.