NOVELTY - Kitchen waste is converted as energy source by utilizing solid-liquid separator; matching solid-liquid separator with protein feed production system comprising crusher, a sorting machine, a mixer, an outlet, greater than or equal to 2 drying devices and greater than or equal to 2 fermentation devices; connecting solid-liquid separator solid outlet to sorting machine connected to crusher inlet and outlet of the crusher; and connecting first drying device to first fermentation device having an outlet connected to the mixer.    USE - Method of converting kitchen waste as energy source for producing biodiesel, or protein feed for livestock.    ADVANTAGE - The method utilizes kitchen garbage thus reducing pollution.    DETAILED DESCRIPTION - Kitchen waste is converted as energy source by:    (A) utilizing solid-liquid separator;    (B) matching solid-liquid separator with protein feed production system comprising crusher, a sorting machine, a mixer, an outlet, greater than or equal to 2 drying devices and greater than or equal to 2 fermentation devices;    (C) connecting solid-liquid separator solid outlet to sorting machine connected to crusher inlet and outlet of the crusher;    (D) connecting first drying device to first fermentation device having an outlet connected to the mixer having outlet connected to second fermentation having outlet connected to second drying device to obtain protein feed;    (E) utilizing a biological diesel production system comprising an oil-water separator, a reaction kettle, a condenser, a rectification column having antioxidant, and intermediate tank; and    (F) connecting liquid outlet of solid-liquid separator to water separator inlet, connecting oil-water separator outlet to inlet of reaction kettle connected to condenser inlet, and connecting condenser outlet to rectifying tower inlet connected to intermediate tank to prepare biodiesel after filtering.    DESCRIPTION OF DRAWING(S) - The drawing is a flow chart of a method of converting kitchen waste as energy source (Drawing includes non-English language text).