TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Method: Integrated processing method for food waste comprises material pouring and sorting, heating and extruding, carrying out solid-liquid separation, drying, carrying out oil-water separation, and packaging; where the food waste car (1), the traveling crane (2), and the waste hopper (3) are matched with each other to pour the waste into the waste separating machine (4) in a batch-type; the solid in the waste of the waste separating machine (4) is divided into the large impurity and the small impurity; the large impurity is selected with the ferrous solid via the magnetic selector (8) at the upper end of the belt conveyer (5) to be conveyed to the rough disintegrator (9); the rough disintegrator (9) roughly crushes the large impurity; the large impurity and the small impurity from the waste separating machine (4) are conveyed to the oblique spiral conveyer (11-a) via the spiral conveyer (6-a); the oblique spiral conveyer (11-a) conveys the material to the heating extruding working procedure B; the liquid material from the waste separating machine (4) is conveyed to the solid-liquid separation working procedure C-2 via the pipeline; the material conveyed to the heating extruding working procedure B via the oblique spiral conveyer (11-a) enters the oscillating screen (13) to be exhausted with the polluted gas via the oscillating screen (13); the processed material is conveyed to the heating kettle (17) via the oblique spiral conveyer (11-b) to be heated in the heating kettle (17) at the pressure of 0.1 MPa and at the temperature of 40-50 degrees C to be extruded into the extruder (18); the solid material from the extruder (18) is conveyed to the drying working procedure D via the oblique spiral conveyer (11-c) and the liquid material from the extruder (18) is conveyed to the solid-liquid separation working procedure C-1 via the pipeline; the solid material conveyed to the drying working procedure D, the water and the steam conveyed to the direr (19) are exhausted via the balancing tank (20), the fan (12-b) and the exhaust pipe (21); the material from the butterfly centrifugal machine (38) enters the crude oil basin (39); the crude oil in the crude oil basin (39) is pumped at the upper portion of the vacuum dewatering kettle (40); the vacuum pressure, the heating temperature, and the temperature keeping time in the vacuum dewatering kettle (40) are respectively 0.65-1.3 KPa, 90 plus minus 5 degrees C, and 30-40 minutes; the oil exhausted from the bottom of the vacuum dewatering kettle (40) is gathered in the refined crude oil tank (48) via the steam reciprocating pump (42) and the filtering machine (43); the refined crude oil in the refined crude oil tank (48) is conveyed to the deep processing working procedure for preparing the soap powder and the biologic diesel oil; and the waste liquid exhausted from the vacuum dewatering kettle (40) is used as the liquid fertilizer.