A liquid ejection head comprising: a liquid ejection head body ; and a reservoir mounted on the liquid ejection head body and supplying a liquid to the liquid ejection head body , wherein the reservoir includes: a reservoir flow passage ; and a branched flow passage arranged closer on a liquid ejection head body side than the reservoir flow passage , the reservoir flow passage extends in one direction, opens to the outside at one end thereof, and is communicated with the branched flow passage at the other end thereof, the branched flow passage extends in said one direction, and is communicated with the liquid ejection head body at both ends portion thereof, and in viewing the liquid ejection head from a reservoir side, at least one of the reservoir flow passage and the branched flow passage in the vicinity of a connection portion where the reservoir flow passage and the branched flow passage are communicated with each other is bent so as to make an angle made by the reservoir flow passage and the branched flow passage approximate a right angle, wherein both the reservoir flow passage and the branched flow passage are bent in the vicinity of the connection portion such that an angle made by the reservoir flow passage and the branched flow passage approximates a right angle, characterised in that the reservoir includes a plurality of branched flow passages and a plurality of reservoir flow passages , and in the liquid ejection head as viewed in a plan view, the branched flow passages are arranged in a direction intersecting with said one direction, and portions of all of the branched flow passages in the vicinity of the connection portions are bent in the same direction. a liquid ejection head body ; and a reservoir mounted on the liquid ejection head body and supplying a liquid to the liquid ejection head body , wherein the reservoir includes: a reservoir flow passage ; and a branched flow passage arranged closer on a liquid ejection head body side than the reservoir flow passage , the reservoir flow passage extends in one direction, opens to the outside at one end thereof, and is communicated with the branched flow passage at the other end thereof, the branched flow passage extends in said one direction, and is communicated with the liquid ejection head body at both ends portion thereof, and in viewing the liquid ejection head from a reservoir side, at least one of the reservoir flow passage and the branched flow passage in the vicinity of a connection portion where the reservoir flow passage and the branched flow passage are communicated with each other is bent so as to make an angle made by the reservoir flow passage and the branched flow passage approximate a right angle, wherein both the reservoir flow passage and the branched flow passage are bent in the vicinity of the connection portion such that an angle made by the reservoir flow passage and the branched flow passage approximates a right angle, characterised in that the reservoir includes a plurality of branched flow passages and a plurality of reservoir flow passages , and in the liquid ejection head as viewed in a plan view, the branched flow passages are arranged in a direction intersecting with said one direction, and portions of all of the branched flow passages in the vicinity of the connection portions are bent in the same direction. <EOS>