The chocolate 3D printing pen, drawing lessons from the principle of the 3D printing pen, can be rotated and inserted into the chocolate bar. The pen is equipped with an electric heating coil, a press to discharge material, with a cooling plate and usb charging base. When holding the pen, the thumb part is designed as the discharge button, and the forefinger part has a groove. The correct grip design can be used to correct the way of holding the pen. The chocolate children 3D print pen can cultivate children's hands-on abilities and promote parent-child communication. The pen body uses mimic modeling, inspired by snail antennae, in line with the psychological characteristics of children. Printed chocolate can be eaten on its own or given to others as a gift.