The invention is suitable for the field of fastening tapes and provides a composite looped pile hair side fastening tape and a manufacturing method thereof. The fastening tape comprises a looped pile and a ground weave. The looped pile is formed by compositing monofilaments and multifilaments. The composited looped pile is dense and stiff. When the looped pile is matched with a hook face fastening tape, the hanging rate of the looped pile hung to a hook is high, and the looped pile does not fall when stressed, and is high in using strength and resistant to fatigue.