Cathode assembly and X-ray tube

The utility model provides a cathode assembly and an X-ray tube. The cathode assembly comprises a cathode base; the grid electrode is connected with the cathode base; the grid electrode is connected with the cathode base through the connecting assembly; a connecting hole formed in the vertical direction is formed in the cathode base; the connecting assembly comprises insulating parts arranged on the two sides of the connecting hole in the vertical direction and a connecting part penetrating through the insulating parts and the connecting hole. And the connecting piece is configured to be in non-contact with the cathode base and combined and fixed with the grid electrode. The cathode assembly can ensure the assembling precision of the X-ray tube, reduce the assembling difficulty and improve the reliability. 本实用新型提供一种阴极组件及X射线管，该阴极组件包括阴极基座；以及与阴极基座连接的栅极；所述栅极通过连接组件与阴极基座连接；所述阴极基座上形成有沿竖直方向开设的连接孔；所述连接组件包括配置于连接孔的沿竖直方向两侧的绝缘件以及贯穿所述绝缘件和连接孔的连接件；所述连接件被配置为与阴极基座无接触并与栅极结合固定。该阴极组件能够保证X射线管装配精度，降低装配难度，增加可靠性。