Device for assisting crawling of an infant (2) on a training surface comprising: - a platform (1) comprising a chest supporting surface for supporting a chest of the infant (2) resting on the platform (1) in a prone position, and - rolling elements (9) rotatably mounted on the platform in such a way they can rotate 360 degrees (1) and arranged to be located between the platform (1) and the training surface, wherein the platform (1) is shaped so that, when the rolling elements (9) are in contact with the training surface, the chest supporting surface of the platform (1) is inclined relative to the training surface, so that the pelvis and the legs of the infant (2) are in contact with the training surface.
