The invention discloses an automatic freshly-made wheaten food vending machine and a working method thereof, and relates to the technical field of automatic vending machines. The machine comprises a machine body, vending devices and a taking port are arranged on the exterior of the machine body, and the interior of the machine body comprises a mechanical arm, wheaten food cooking devices, sauce adding devices, conveying devices and an upper layer goods shelf which are arranged on an operation platform; wheaten food is obtained from the upper layer goods shelf by the mechanical arm, cooking of the wheaten food is completed by matching of the mechanical arm and the wheaten food cooking devices, saucer addition is conducted by the sauce adding devices, the wheaten food is seal-capped by a combined clamp and clamped to the conveying devices, and the finished products are conveyed to the taking port by the conveying devices. According to the automatic freshly-made wheaten food vending machine, structural configuration is rational, the integration degree is high, the working efficiency is high, fully automatic wheaten food product making and vending can be achieved, the freshness of the food is guaranteed, and health and sanitation are provided; meanwhile, the machine has various choices of flavors, food amounts and different ingredients, so that the requirements of customers are met.