An X-ray imaging method including the following steps is provided. An X-ray source is provided, wherein the X-ray source includes a housing, a cathode, and an anode target. The housing has a window, the cathode is disposed in the housing, and the anode target is disposed beside the window. The cathode is caused to provide the electron beam. Part of the electron beam hits at least part of the anode target to generate an X-ray and the X-ray emits the housing through the window. The X-ray is caused to irradiate an object to form an X-ray image. An image detector is used to receive the X-ray image. Besides, an X-ray source is also provided.一種X光成像的方法，包括下列步驟。提供一X光光源，其中X光光源包括一殼體、一陰極以及一陽極標靶。殼體具有一端部窗口，陰極配置於殼體中，且陽極標靶配置於端部窗口旁。使陰極提供一電子束。部分電子束撞擊陽極標靶的至少部份區域後產生一X射束，且X射束經由端部窗口射出殼體。使X射束照射於一物體以產生一X光圖像資訊。利用一影像檢測器接收X光圖像資訊。此外，一種X光光源亦被提出。
