NOVELTY - Biogas generation involves preprocessing the biogas raw materials. The crop straw is moistened by biogas liquid of the biogas pool and is stacked for 3-7 days at a temperature of 33-37 degrees C and the temperature of the raw material pile is increased to 60 degrees C till the pile temperature decreases from the highest value and white microbes are seen in the pile material. The stack retting is stopped to obtain fermenting raw material. The dry and fresh excrement of the livestock and poultry is stacked in the pool for 3-5 days at 33-37 degrees C.    USE - Method for generating biogas (claimed).    ADVANTAGE - The biogas generation method ensures low carbon economy.    DETAILED DESCRIPTION - Biogas generation involves preprocessing the biogas raw materials. The crop straw is moistened by biogas liquid of the biogas pool and is stacked for 3-7 days at a temperature of 33-37 degrees C and the temperature of the raw material pile is increased to 60 degrees C till the pile temperature decreases from the highest value and white microbes are seen in the pile material. The stack retting is stopped to obtain fermenting raw material. The dry and fresh excrement of the livestock and poultry is stacked in the pool for 3-5 days at 33-37 degrees C till the color of the raw material pile turns from yellow to black brown. The pH of the raw material pile is controlled at 6.8-7.4 and is kept stably till the stack retting is finished to obtain another fermenting raw material. Both of the obtained fermenting raw materials are mixed uniformly to obtain a mixture, where the ratio of carbon to nitrogen is 20-30:1. The obtained mixture is packed into a fermenting device of the fermenting equipment, where the fermentation cycle is controlled for 20-30 days, at a temperature of 33-37 degrees C and a pH of 7. An INDEPENDENT CLAIM is also included for an apparatus for generating biogas, which comprises single and independent fermenting devices, a travel transport device, a feed device, a discharge device, biogas liquid collection devices, a biogas liquid backflow device and biogas collection devices.