To provide a flexible hand carriage and cart capable of being moved as if being rolled on a flat ground while pulling and pushing freely even in climbing up and down a stairway and moving on an irregular gravel road by applying a catapillar 4 on a hand shopping car and cart and, on a flat ground applied with asphalt, capable of freely moving on a flat ground and an asphalt ground by normal wheels by releasing the function of the catapillar.

When the function of the catapillar 4 is used, a lifting hardware 10 of the catapillar 4 is removed, wheels 6 at the lower part of the catapillar 4 are lowered downward from a normal wheel part 1 to the ground, the normal wheel part 1 is raised off the ground, and a catapillar frame 3 is fixed by a fixing device to use the hand carrier and cart in climbing up and down the stairway and moving on the gravel road 11 and the irregular road. When the catapillar 4 is not required, the catapillar fixing device is removed, the catapillar 4 is lifted upward by the normal wheel 1, fixed with the lifting hardware 10, and moved forward by the normal wheel 1.