The invention discloses a piece of mobile wrist strap equipment and a working method thereof. The mobile wrist strap equipment comprises a single chip MCU (Microprogrammed Control Unit), a communication IC (Integrated Circuit), a buzzer, a vibrator, a key, an LED (Light Emitting Diode) lamp, a low-voltage checking circuit, a 2.4G communication frequency modulation circuit, an acceleration transducer, a gyroscope integrated chip, a register, a USB (Universal Serial Bus) circuit, a power supply stabilivolt, a USB charging circuit, an ionic charge battery, an infrared checking circuit and a blood oxygen checking circuit. The mobile wrist strap equipment is a piece of USB equipment with wireless transport protocols, is capable of recording motion, daily life and sleep information of a person, transmitting motion information of the person through a USB and wireless mediums, and monitoring and recording daily action and motion data and sleep information of a user. The mobile equipment displays a motion mode and the completeness of a day motion goal through LEDs without using a piece of LCD (Light Crystal Display) equipment, so that the mobile equipment is very simple and the attachment feeling of wearing is greatly decreased when the mobile equipment is used.