The invention relates to the technical field of fastener assembling equipment, in particular to an automatic spring assembling machine which comprises a bottom platform. The automatic spring assembling machine is characterized in that the bottom platform is provided with a fastener feeding mechanism, a spring feeding mechanism and an overturning assembling mechanism used for receiving fasteners on the fastener feeding mechanism, the output end of the spring feeding mechanism is provided with a conveying mechanism used for conveying springs to the overturning assembling mechanism, and the bottom platform is further provided with a discharging channel used for receiving assembled products of the overturning assembling mechanism. The automatic spring assembling machine has the following advantages that human assistance is not needed in the production process, the production process is fully and automatically completed through equipment, and therefore labor is saved, and the labor cost is reduced; the labor intensity is greatly reduced; and due to the fact that automatic equipment assembling is adopted, the production efficiency is much higher than that of existing artificial assembling or semi-automatic equipment assembling, and the quality of assembled finished products is better.