Deliberately design a micro-disc iron-free generator for DIY friends, which is convenient for everyone to transform. This disc-type ironless generator has been produced and modified many times. The size, quality, speed and efficiency have been greatly improved. The miniature iron-free disc generator has an outer diameter of only 80mm and thickness. Only 30mm, shaft diameter 6mm, the shell rotor is made of metal, with material foot, exquisite workmanship, strong and durable, the stator is sealed with epoxy resin, waterproof, wind dust, inner rotor type. No magnetoresistance, light start. It has high power generation efficiency and weighs only 330 grams. Suitable for micro-power generation devices, toys, scientific research, experiments, breeze power generation, hydraulic power, free energy, wireless electronic power supply, and many other uses.