Generally, the pulp is located inside the tooth, with dentin and enamel on the outside, and there are abundant nerves, blood vessels, lymph and connective tissues connected inside the pulp, so it is not possible to aspirate the pulp out by yourself under normal circumstances. Moreover, in clinical practice, patients with exposed pulp or even related diseases such as pulpitis need to have the pulp removed under local anesthesia by a specialized doctor, rather than easily removing the diseased pulp tissue by suction. Patients who have the idea that they can aspirate the pulp out themselves may have had a previously diagnosed problem with pulp exposure and, in turn, mistakenly thought it was pulp when they sucked certain substances out of their mouths. However, it may actually be food debris, which can trigger food impaction when eating food that is not easily chewed, smaller in size, or perhaps a gap between two teeth that is too large, etc. And then sucking hard, the food debris that is sucked out is thought to be pulp. In addition, it is not excluded that it is a purulent discharge secreted by some gum diseases. If the patient has had caries, pulpitis and other disease problems, it can cause the lesion to spread to deeper periodontal pockets and cause pus to overflow from periodontal pockets, and at the same time, the patient can have severe pain, and the pain is aggravated when eating irritating food such as too cold or too hot. At this time, it is recommended to seek medical attention for a clear diagnosis. If pulpitis is confirmed, treatment methods such as direct pulp capping and pulpotomy can be chosen under the guidance of the doctor according to the degree of the disease.