A laser connection method based on the laser material additive manufacturing technology relates to a welded connection method of a special material. According to the laser material additive manufacturing principle, and by utilizing the laser depositing method and the layer-by-layer piling method, a new material shaped like the welding seam between two base materials is formed between the welding seam of two connecting materials and the formed new material is further utilized to connect the two base materials. According to the laser connection method based on the laser material additive manufacturing technology, provided by the invention, the metallurgical composition of the welding seam and the joint performance are improved, near-net forming connection is realized, materials are greatly saved, the cost is reduced, weld defects are controlled, the degree of automation is high, and the operation is easy; besides, a fiber laser, a YAG solid laser, a semiconductor laser or CO2 laser are taken as the core, and a powder feed device, a protective gas system and a cooling system are taken as auxiliary appliances, therefore the overall system is high in automation level, can realize whole-process computer control, and is simple in operation processes and further easy to implement.