Several bacteria strains was isolated from ponds in Wuhan, showed lytic effect on Microcystis. The culture mixed bacteria strain A3, A4 has strongly lytic-effect compared to the single bacteria strain. The way of algae-lysing of bacteria strain A3, A4 both lysed the algae for the direct way, but the way of mixed culture occured change, since it lysed the algae for the direct way, also secretin...