The invention discloses a method for extracting mogroside from fresh fructus momordicae, belongs to the field of a natural extract preparation process, and relates to a method for extracting mogrosideby using mixed perfect and damaged fresh fructus momordicae as raw materials. The method for extracting mogroside from fresh fructus momordicae provided by the invention has the advantages that the damaged fresh fructus momordicae is fully utilized; the resource waste is reduced; the problem of decolorizing pressure increase caused by the addition of flocculating agents in the extracting processis solved; the extracting rate of the extracted mogroside is high; the water consumption quantity in the extracting process is low; the safety of the mogroside finished product is high; the color andluster is pure.