The present invention relates to a needleless injection port of the filter is provided, more particularly filters and internal number is to filter glass particles mixed in the injection liquid, to large area filters or filter by making it possible to bypass the Fig injection point and injection-conductive, to a syringe hub outer surface and a needle-free injection is provided so as not to contact the filter by minimizing the contact area with the injection port. days of the invention embodiment has the upper end there is arranged on the inner side of the lower housing and the upper housing has a lower end that is discharged to be the top and the drug solution is connected in a lower end in communication with the tubular in the upper housing and the upper housing is an inlet that chemical liquid inlet formed discharge formed soft and a lower side in this comprises a filter disposed inside the large species in the form of a tubular membrane and the lower housing, an inlet in the upper housing is an edge so as to contact only the edges, even if the inner portion of a hand or the top of the inlet in contact with other things and protruding, the membrane usually has a projecting opening and closing to seal the inlet port and opened when it is the injection hub of a syringe inserted is formed in the inner middle part of the membrane, the membrane top to the incision portion opens when a syringe infusion hub is pressed provides a needleless injection port-type filter is provided, characterized in that the intermediate part projecting from the incision to the lower end closing portion of the membrane. or comprises a reverse flow prevention instead of the membrane, the upper portion than the non-return fart that has been and will see large the open guboda diameter is placed at the bottom of the opening formed in the filter to the ball at the bottom, wherein provided with a elastomers boosting see the upward having no needle injection provides a port. the other hand, the uppe
