It is generally not possible to leave a tooth pulp open without treatment because once the pulp is opened it can cause secondary infections that would otherwise affect the recovery of the condition. Tooth open pulp belongs to a kind of root canal treatment, once the pulp cavity is opened, it is necessary to continue to carry out the treatment, otherwise it will increase the risk of infection, prone to cause pulpitis, periapical inflammation, etc., which has a greater impact on the patient’s life. Do not continue the treatment after the tooth is opened pulp, may also affect the crown restoration, not to protect the tooth, may lead to the tooth becomes fragile, easy to enamel damage, the tooth is also easy to splinter, and ultimately will affect the normal chewing, eating, and in serious cases, easy to cause not easy to heal the cheek fistula. At present, after doing the tooth open pulp, it is recommended to carry out the targeted treatment as soon as possible, and clean up the dirt in the pulp cavity, and then carry out local rinsing, medication and sealing, which should be completed under the guidance of a professional physician.