The invention provides a distributed X ray light source, a control method of the distributed X ray light source and CT equipment. The distributed X ray light source comprises a plurality of arranged cathode assemblies used for emitting electron beams, an anode target used for receiving the electron beams emitted by the cathode assemblies, and a compensation electrode and a focusing electrode in turn arranged between a plurality of the cathode assemblies and the anode target, wherein the compensation electrode is used for adjusting the electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode is used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in a plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately arranged, and an electron beam channel is formed between the first electrode and the second electrode. By adopting the X ray light source, the effect of producing more X ray radiation sources with less cathode assemblies can be realized, the stability of the system is improved, the use amount of the cathode assemblies is reduced, and the production cost of the equipment is reduced.