FUEL INJECTION VALVE

A fuel injection valve (100) is provided with: a valve seat (12) having a valve-seat seat section (12a) and a valve-seat opening section (12b); a valve body (10) brought into contact with the valve-seat seat section (12a) of the valve seat (12) to prevent the outflow of fuel from the valve-seat opening section (12b) and separated from the valve-seat seat section (12a) to allow the outflow of the fuel from the valve-seat opening section (12b); and injection hole plate (13) affixed to the downstream end surface of the valve seat (12) and having a plurality of injection holes (14) for ejecting to the outside the fuel flowing out from the valve-seat opening section (12b). The upstream end surface of the injection hole plate (13) has a swirl chamber (18) to which the injection holes (14) are open and connected and which applies a swirling force to fuel, and a fuel passage (17) which introduces fuel into the swirl chamber (18). The swirl chamber (18) and the fuel passage (17) comprise side walls (20) having a tapered shape which widens toward the upstream side, and the downstream end surface of the injection hole plate (13) has a recess (30) in a region including the swirl chamber (18) and the fuel passage (17).