Liquid ejection head

Provided is a liquid ejection head, including: a liquid chamber; a supply port; and a recording element substrate arranged at a position opposed to the supply port across the liquid chamber. The liquid chamber includes: a first surface connected to the supply port; a space chamber having a wall surface extending in a direction away from the recording element substrate, wherein the wall surface is connected to the first surface; and a second surface, the second surface connecting a wall surface of the space chamber and the recording element substrate to each other. An intersection portion of the wall surface of the space chamber and a plane extended from the first surface is more distant from the recording element substrate than a connection portion between the wall surface of the space chamber and the second surface. 提供种液体喷出头，其包括：液室、供给口和记录元件基板，该记录元件基板配置在隔着液室与供给口相对的位置。该液室包括：第表面，其与供给口连接；空间室，其具有沿远离记录元件基板的方向延伸的壁面，该壁面与第表面连接；和第二表面，其使空间室的壁面与记录元件基板彼此连接。空间室的壁面与从第表面延伸的平面的交叉部距记录元件基板的距离比空间室的壁面与第二表面之间的连接部距记录元件基板的距离远。