The present relates to a filter needle coupled between a fixation member having a needle for injecting a medical fluid after filtering foreign substances contained in the medical fluid and a disposable syringe, the filter needle includes an outer housing having a front end portion to which the fixation member is coupled and a rear end portion to which the disposable syringe is coupled and a filtering unit which is disposed inside the outer housing, and in which a medical fluid supplied from the fixation member to the disposable syringe is passed through as is, while a medical fluid supplied from the disposable syringe to the fixation member is filtered.
