An X-ray generation apparatus comprising: an X-ray generation tube including a cathode having an electron emitting portion configured to emit electrons in a first direction, and an anode having a target configured to generate X-rays by the electrons radiated from the electron emitting portion colliding with the target; a voltage supply configured to supply a voltage to the X-ray generation tube via a conductive line; a storage container including a first portion configured to form a first space that stores the voltage supply, a second portion configured to form a second space whose width in a second direction orthogonal to the first direction is smaller than that of the first space and which stores the X-ray generation tube, and a connecting portion configured to connect the first portion and the second portion to each other so that the first space and the second space communicate with each other to form an internal space of the storage container; and an insulating liquid that fills the internal space including the first space and the second space, wherein the second portion includes a tubular shape, wherein the connecting portion includes a pointed portion that in a sectional view points from a circumferential portion of the tubular second portion toward the internal space in said section of a plane parallel to the first direction, and in the first direction, the cathode is arranged between the pointed portion and the anode, and an insulating member is arranged to surround at least a portion of the conductive line and block at least a shortest path between the conductive line and the pointed portion, and the connecting portion includes a plate portion spreading in a direction orthogonal to the first direction, and the plate portion includes an opening through which the conductive line passes. an X-ray generation tube including a cathode having an electron emitting portion configured to emit electrons in a first direction, and an anode having a target configured to generate X-rays by the electrons radiated from the electron emitting portion colliding with the target; a voltage supply configured to supply a voltage to the X-ray generation tube via a conductive line; a storage container including a first portion configured to form a first space that stores the voltage supply, a second portion configured to form a second space whose width in a second direction orthogonal to the first direction is smaller than that of the first space and which stores the X-ray generation tube, and a connecting portion configured to connect the first portion and the second portion to each other so that the first space and the second space communicate with each other to form an internal space of the storage container; and an insulating liquid that fills the internal space including the first space and the second space, wherein the second portion includes a tubular shape, wherein the connecting portion includes a pointed portion that in a sectional view points from a circumferential portion of the tubular second portion toward the internal space in said section of a plane parallel to the first direction, and in the first direction, the cathode is arranged between the pointed portion and the anode, and an insulating member is arranged to surround at least a portion of the conductive line and block at least a shortest path between the conductive line and the pointed portion, and the connecting portion includes a plate portion spreading in a direction orthogonal to the first direction, and the plate portion includes an opening through which the conductive line passes.