The invention relates to a welding point position adjustment device, a method thereof and a gold ball welding apparatus. The gold ball welding apparatus comprises a base, a workbench and the welding point position adjustment device arranged between the base and the workbench. The welding point position adjustment device comprises a digital vedio recording device, a bracket, a positioning adjustment platform, a driver and a computer, wherein the digital vedio recording device is supported by the bracket and is connected with the computer, the position adjustment platform is used for supporting the workbench and adjusting the position thereof, and the computer is connected with the position adjustment platform by the driver. The method for adjusting the welding point position includes the steps: firstly, pictures of a work piece to weld are taken and transferred to the computer; secondly, after processing the pictures, the computer calculates the position deviation of the welding point; and thirdly, the position adjustment platform is driven to eliminate the position deviation. As an operator is no longer needed to adjust the position of the welding point with a microscope, the training cost is greatly saved, the health of the operator is ensured, and the consistency of the welding quality is improved on the basis of reduced labor intensity and increased production efficiency.