A multifunctional Bluetooth player is used in cooperation with a smartphone with the Bluetooth communication function. The multifunctional Bluetooth player comprises an MCU single-chip microcomputer, a power supply management circuit, an audio frequency A/D switching circuit, a Bluetooth communication module, functional buttons, a USB interface and a shell. A gravity sensor is arranged in the shell, connected with the MCU single-chip microcomputer, and used for collecting movement and sleep data of a human body. A hanging rope through hole and a tying band fixing groove are formed in the outer surface of the shell and are used for allowing the multifunctional Bluetooth player to be worn on the wrist or the arm or the waist. A communication contact interface is formed in the bottom of the shell and between the MCU single-chip microcomputer and an authorized external electrical or electric product which is used in cooperation with the multifunctional Bluetooth player, and the communication contact interface is used for controlling the authorized external electrical or electric product, and further connected with the power supply management circuit for charging. The multifunctional Bluetooth player integrates the functions of step counting, sleep monitoring, Bluetooth playing and wireless control, has the advantages of being intelligent, wireless, portable, multifunctional, convenient to use and low in carbon, and can reduce the repeated investment for a consumer.