The present invention relates to a syringe, and more particularly, to a syringe, in which, when liquid medicine for treatment such as an analgesic is suctioned into a syringe by using a syringe needle and injected into a human body through the syringe needle, foreign substances generated in an ampule and the like are filtered in the syringe when the liquid medicine is injected into the human body when the foreign substances are suctioned into the syringe through the syringe needle. In addition, the filter for the filtering has a simple structure so that the filter can be simply installed into the syringe.
