The present invention relates to a filtering syringe, and more particularly, to an apparatus obtained by improving a syringe provided with a filter means for filtering foreign substances such as glass fragments of an ampoule, so as to prevent the foreign substances from being injected together with a liquid medicine while allowing the liquid medicine to be smoothly sucked and injected with a small force, especially even though a filter means having micro-pores is employed. The filtering syringe is configured such that the filter means is provided in the injection flow passage to prevent the foreign substances from being injected together with the liquid medicine while enabling the liquid medicine to be more smoothly sucked and injected despite employing the filter means having the micro-pores, thereby maximizing users convenience and marketability of the syringe.
