TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Components: The anaerobic digestion method involves performing super high temperature hydrolyzing and acidizing reaction and high temperature methane producing reaction, where the temperature for super high temperature hydrolyzing and acidizing reaction is controlled at 65-68 degrees C and pH at 5.5-6, and temperature for high temperature methane producing reaction is controlled at 53-36 degrees C and pH at 6.8-7.5. The super high temperature hydrolyzing and acidizing reaction is performed in the two-grade reactor, where the first-grade temperature is controlled at 65-68 degrees C and pH at 5.5-6, and second grade is transition reactor and temperature is controlled at 60-63 degrees C and pH at 6-6.5, and high temperature methane producing reaction comprises at least two-grade reactor. The anaerobic digestion process and biogas residue floating method are used for treating the biogas residue and solid digestion substance. The high-pressure reflow gas is used for blowing strongly and at fixed time so that all of the biogas residue and the solid digestion substances float. The self digestion liquid is used for blowing in low pressure for each reactor to maintain the biogas residue and solid digestion substance not to settle so that the anaerobic bacteria and the digestion substance completely touch to accelerate the digestion speed. The high temperature methane producing reactor comprises two, three or more reactors which are sequentially connected, material inlet for adjusting the pH and methane producing gas outlet tube are arranged on the top of each reactor, and heater for each reactor is independently arranged and connected with the thermodynamic system through tube. The floating blowing tube is arranged at the bottom in the super high temperature hydrolyzing and acidizing reactor and high temperature methane producing reactor, and floating blowing tube is introduced from the top and is connected with self-digestion liquid circulating system and reflow gas high-pressure system. The high-speed biological treatment system further comprises pre-treating pond, oil blocking pond, preparing pond and alkaline solution pond, where food waste inlet is arranged on the top of the pre-treating pond and pre-treating pond communicates with the bottom of the oil blocking pond, outlet is arranged on the pre-treating pond for separating illegal cooking oil, overflow tube is arranged on the oil blocking pond and communicates with the high-temperature hydrolyzing and acidizing reactor, diving reamer crusher is arranged at the bottom of the preparing pond, and conveying pump is arranged among the oil blocking pond, alkaline solution pond and preparing pond and communicates with the preparing pond. The high-speed biological treatment system further comprises material overflowing pond, where large-caliber tube is arranged on the upper middle portion of the final high temperature methane producing reactor and communicates with the material overflowing pond, digestion material conveying tube, alkaline solution conveying tube and the biogas residue and biogas liquid conveying tube are shared, switch valve is arranged among the tubes, and temperature and acidity meter installing tube port and self-circulation pump installing window are installed on the top of each reactor.