Abstract: In this paper, the green-protecting technology of Brasenia Schrebri Gmel and its quality control were discussed. Theresults showed that the general effect of green-keeping and gel-protecting was of a sort if water shield was blanched in singlegreen-protecting solution. But the stable effect of green-keeping and gel-protecting was obtained when water shield was blanchedfor 1.5min at 95℃,and then soaked in the solution of pH4.0,200mg/kg Cu2+ for 4.0h,last cleaned,canned, filled with sour solution,sealed, and sterilized. Furthermore, the measure on gel-protecting and correlative questions on the security in its processingwere put forward.

Key words: Brasenia schreberi JF Gmel, green-keeping, quality control