The invention discloses a multifunctional laundry rack system. The multifunctional laundry rack system comprises a plurality of installation top pedestals, a clothes hanging rod, a control box, a rotating motor, a solar panel installation rack, clothes hanging holes, an electrical heating rod, ultraviolet disinfection lamps, an accumulator tank, an accumulator, a first voltage conversion circuit module, an inverter, a USB interface, a power socket, a reel, a retractable line, a hand crank, a universal cradle head, a solar panel, illumination intensity detection sensor, a control circuit board, and a control circuit; the control circuit comprises a MSP430 single chip microcomputer, a second voltage conversion circuit module, a crystal oscillation circuit module, a reset circuit module, a data storage circuit module, an automatic manual selection button, a laundry rack rising button, a laundry rack falling button, a drying button, a sterilizing button, a signal processing circuit module, a charge control circuit, a motor driver, a cradle head driver, a heating control relay, and a sterilizing control relay. The multifunctional laundry rack system is capable of saving energy, and realizing effective utilization of solar energy, is friendly to the environment, and is high in working reliability.