An　overall　view　of　the　permanent　engineering　of　soil　nailing　is　summarized　so　as　to　provide　design　references　for　its　much　wide　use.　Summing-up　analyses　on　the　research　and　development　of　the　permanent　engineering　of　soil　nailing,　both　domestically　and　abroad,　are　given.　Based　on　the　corrosion　of　subsoil　and　the　service　life,　the　rust-resistant　measurements　are　selected　from　one　of　the　measures　as　follows:　(a)　increasing　the　diameter　of　nail　rods;　(b)　zinc　coating　or　epoxy　coating　on　the　surface　of　nail　rods;　(c)　ensuring　thickness　of　protective　coating　of　the　grout;　and　(d)　adopting　enclosed　rust-resistant　nails.　Several　engineering　cases　of　permanent　soil　nailing　are　examined.　Soil　nailing,　as　a　kind　of　reliable　permanent　earth　retaining　structure,　uses　less　material　and　decreases　the　amount　of　engineering.