The instant disclosure relates to a modular cart, which includes a base and a tower. The tower can be assembled and disassembled. The base has a mounting seat supported on wheels. The wheels allow the mounting seat to move on a working surface. The mounting seat further defines an axis extending away from the working surface. The tower is mounted on the mounting seat and has N number of main bodies and N−1 number of couplers. With N≧2, the main bodies and the couplers are interconnected into a predetermined length. Each coupler is connected between two main bodies.