Cold just, daytime body temperature is normal at night 37.3, if there is no other symptoms, you can continue to observe, if the combination of other symptoms, need to identify the cause, according to the cause of treatment. Cold just, daytime body temperature is normal at night 37.3, is a critical temperature, need to continue to monitor the body temperature, if the body temperature rises again, indicating that there is still fever. In general, if the mental status is good and there are no other serious symptoms, you can continue to observe. A slightly higher temperature, not more than 38.5 ℃ can be given physical cooling, if more than, need to take oral antipyretic drugs at the same time actively consult the doctor. If there are other symptoms such as severe cough, diarrhea or poor mental status, it is necessary to find the cause of the fever and then treat accordingly. If the cold symptoms continue to worsen, it is recommended to seek medical attention to identify the cause and treat it accordingly.