The invention relates to a medicament for treating latent glomerulonephritis. The medicament is prepared from the following medicinal materials in parts by weight: 15 parts of aspidistra elatior, 3 parts of medicago falcate, 12 parts of common sesbania roots and leaves, 1 part of cotton eucommia, 20 parts of gurgeon stopper roots, 15 parts of clover fern, 20 parts of pteris cretica, 9 parts of needle juniper, 7 parts of stemflower brandisia, 2 parts of fungus-infected rice spikes, 20 parts of common edelweiss herb, 15 parts of caryopteris nepetaefolia, 9 parts of roots of hollyhock, 1 part of senecio nagensium, 5 parts of rigidleaf cymbidium fruits, 25 parts of wedelia chinensis, 3 parts of delavay meadowrue roots, 5 parts of swamp mahogany leaves, 12 parts of colysis elliptica, 1 part of argiope bruennichii, 1 part of teucrium viscidum, 2 parts of salvia prionitis and 15 parts of delavay greenleaves. Clinical experiments verify that the medicament can safely and effectively treat latent glomerulonephritis.