The invention discloses a wearable monitoring system convenient to disassemble and assemble and a using method of the wearable monitoring system. The wearable monitoring system comprises a wig hair shaft and hair roots connected to the hair shaft, wherein the hair shaft is of a hollow cylinder structure, a measuring cavity is formed in a cavity of the hair shaft, a microprocessor is arranged in the measuring cavity, a sample cavity is further formed in the cavity of the hair shaft and is located on the side, close to the hair roots, of the measuring cavity, and the sample cavity is tightly attached to the hair roots and communicates with the hair roots through a filter screen; a fixing mechanism is arranged at the connecting position of the sample cavity and the hair roots and is a fixingring arranged on the outer wall of the sample cavity, the fixing ring is made of a flexible material, and an inner ring of the fixing ring is tightly attached to the outer wall of the sample cavity; and flame retardant liquid is arranged in the interlayer of the side wall of the hair shaft, a cavity is formed in the fixing ring and communicates with the interlayer of the side wall of the hair shaft, and a sealing ring is arranged on the side, facing the hair roots, of the outer ring of the fixing ring. According to the wearable monitoring system, the flame retardant liquid is arranged outsidethe implantable wig, and meanwhile, the convenience of implanting and pulling out the wig is improved through the mobility of the flame retardant liquid.