The utility model discloses a self-insulation building block, comprising a building block body and an insulation material, the building block body comprises an upper building surface, a lower building surface, a front face, a rear face, a left end face and a right end face, the building block body also comprises three rows of through holes which are arranged at the front, the middle and the rear and communicated with the upper building surface and the lower building surface, the through holes comprise integral holes and groove-shaped holes, one end face is provided with at least one groove-shaped hole. According to the utility model, the length of a heat bridge can be correspondingly prolonged, thus the self-insulation building block has better integral insulation effect.