Abstract: A design and a manufacturing method for mini two-wheel automobiles include an automobile realm and a motorcycle realm for manufacturing a mini automobile running with two wheels and kept its balance during running by a principle of a gyroscope, as if it were a motorcycle. When it stops or runs very slowly, an intelligent fall-down frame provided in the mini two-wheel automobile automatically moves down to keep the automobile body balanced on the ground. The mini two-wheel automobile also has other safety designs and structures, with light, safe, gas-effective, convenient and comfortable property.