In daily life, the life of the blind is full of inconveniences, among which the blind people face huge problems in writing. The existing braille writing board is too inefficient and not suitable for writing for a long time, and has poor safety, and it is easy to write for a long time. Moreover, the existing braille writing board must use a braille pen to point out one by one, and the efficiency is low, and it is writing braille In the process of v, inadvertent attention may lead to the danger of getting your hands, and it is not conducive to the learning of the blind. For this, I designed an electronic portable braille typewriter. This typewriter is a blind typewriter, because all braille is composed of six types. I selected a combination of points, and I changed those six points to six keys to print all braille. The six key positions of the typewriter respectively represent the six points on the side of the braille. By pressing the key To express different brailles, press the black bu-tton to confirm, and the braille will appear in the form of small black dots through a 3D printer with light-cured resin materials to form brailles to assist the blind in learning.