The invention discloses a construction method for spraying-seeding kind-loam matrix on a side slope. The construction method comprises steps of A) analyzing stability of the side slope and reinforcing the side slope, B) eliminating dangers for the side slope, C) hanging a net for a slope surface of the side slope and constructing anchor rods, D) arranging a river system for the side slope and arranging a drainage system on the side slope, E) spraying and seeding seeds on the side slope via a kind-loam matrix spraying-seeding way, and F) conducting side slope maintenance management work including covering a non-woven fabric, watering, applying fertilizer, preventing diseases and insects, supplementing seeds and post-monitoring. Two-layered spraying-seeding way is applied; through bionic operation, kind-loam matrix in the nature suitable for the side slope can be simulated; plant seed germination, root development, microorganism activity and nutrient conversion can be facilitated; plant growth development can be promoted; and great application prospect can be achieved.