NOVELTY - The reactor comprises a reactor body provided with a sensing control device. The sensing control device is provided with a shell. An upper part of the shell is provided with multiple diffusion channels for regulating an opening of an aeration system. A temperature control system is arranged in the shell and connected with a water outlet tube. The shell is provided with multiple openings that are covered with a micro-pore filter film. The temperature control system is provided with a heating rod and a temperature sensor. The heating rod is fixed in a center part of the shell.    USE - Granular anaerobic sludge domestication reactor.    ADVANTAGE - The reactor has simple structure and convenient operation, and can promote domestification speed and reduce the processing cost.    DETAILED DESCRIPTION - The reactor comprises a reactor body provided with a sensing control device. The sensing control device is provided with a shell. An upper part of the shell is provided with multiple diffusion channels for regulating an opening of an aeration system. A temperature control system is arranged in the shell and connected with a water outlet tube. The shell is provided with multiple openings that are covered with a micro-pore filter film. The temperature control system is provided with a heating rod and a temperature sensor. The heating rod is fixed in a center part of the shell. The sensing control device has sensing volume ratio of 1:100-1:40. An upper part of the reactor main body is provided with a fixed pulley. The upper part of the shell is provided with a hook and a fixed pulley. The regulating rope is connected with the hook and the fixed pulley. The shell is provided with a cuboid main body that is connected with a cuboid and rectangular main body. The rectangular main body is connected with a bottom part of an inverted pyramid structure. The hook is connected with a top part of the pyramid structure. The diffusion channel is fixed on the four rectangular main body. Two sides of the diffusion channel are provided with regulating plates in vertical direction. The regulating plate is utilized for regulating height of a nylon rope to wound on the fixed pulley. An INDEPENDENT CLAIM is included for a method for domestication of anaerobic granular sludge.