The invention discloses a wearable multi-information fusion gait analysis system and a method thereof. The wearable multi-information fusion gait analysis system is characterized by comprising a flexible sensor module, a three-axis acceleration and gyro sensor, a microprocessor, a power supply module, a transmission module, a positioning module, a client side, a cloud server and the like. The flexible sensor is used for measuring the gait data of the bottoms of feet when a user walks, the gait data is sent to the cloud server after being analyzed through the microprocessor, and a gait situation is displayed on a user client side in real time. If the user is under an emergency situation, the guardian of the user can receive alarming information and position the position of the user in real time so as to rescue the user. The wearable multi-information fusion gait analysis system can cause the guardian to know the gait situation of a person under guardianship at any time, and receives the alarming information and the positioning information generated when the person under guardianship moves, so that support and help can be provided for the rehabilitation of a foot patient, the gait monitoring of the aged, walk learning of children and the like.