A safety seat is a seat designed for children of different weights (or ages), installed in the car, which can effectively improve the safety of children by car. European mandatory Implementation standard ECE R44 03 is defined as a child safety protection system that is capable of being fixed to a motor vehicle with a seat belt assembly with a ISOFIX interface or a flexible part, an adjusting mechanism, an accessory, etc. In the case of a car crash or a sudden deceleration, it can reduce the pressure on children and limit the movement of children to reduce their damage.