A three-dimensional netted vegetation blanket with upright loops is manufactured by mechanically weaving a plurality of longitudinal, transverse, and loop-forming threads. The transverse threads are woven into a plurality of horizontal net bodies having a predetermined thickness and presenting a plurality of interlocked double-ply rings. The longitudinal threads are twisted threads having a predetermined strength, and are extended through the horizontal net bodies. The loop-forming threads are upward and downward extended through the interlocked rings of the horizontal net bodies to form a plurality of upright loops over any two parallelly adjacent horizontal net bodies, so as to give the netted vegetation blanket an enhanced structural strength and provide a 3D growing space for vegetation seeds. The 3D netted vegetation blanket has high void ratio to advantageously grow seeds and support seedlings, and thereby provides good effect in soil and water conservation as well as vegetation engineering works.
