An engineering-purpose netted vegetation blanket includes a plurality of mesh units arrayed and interwoven into rows. The mesh units each have borders loop-knitted using thick threads to form a double-layer structure including an upper and a lower thick-thread layer, and a plurality of curved thin threads that are so woven to locate between the upper and the lower thick-thread layer and be sequentially arrayed and extended between two adjacent ones of the borders while protruding from a plane defined by the borders. The mesh units are so arrayed that the mesh units in any two adjacent rows are in staggered relation, such that a void is formed between any two adjacent mesh units. With these arrangements, the netted vegetation blanket is flexible and can be wound into roll, and helps in easy growth of grass and plants, preventing soil erosion and retaining compost to achieve the purpose of greening environment.
