Portable infusion device

The utility model discloses a portable infusion device comprising a mounting plate, a winding roller, an infusion tube and a wrist fixing belt, wherein one surface of the mounting plate is provided with a safety pin used for being arranged on the human body, the other surface thereof is provided with a binding belt used for fixing the infusion bottle or infusion bag; one end pf the infusion tube moves around the winding roller and is connected with the infusion bottle or infusion bag through a pricking needle; and the middle lower part of the other end of the infusion tube is provided with the wrist fixing belt. The utility model has the benefits: due to the adoption of the structure, people can attach the mounting plate on an arm just like a shoulder board, one hand can be set free to do other things and a person can walk randomly during infusion; the infusion needle is fixed by the wrist fixing belt, thus being safe and stable; and the winding roller can be used for adjusting the distance between the mounti