The invention discloses a horizontal four-axis blender, and relates to a blender for high-sticky materials, or cement or other light materials which runs along a horizontal or basically horizontal axis. The invention provides a horizontal four-axis blender with the advantages of high blending efficiency, lower energy consumption, and broader applicable scope, in which materials can flow more smoothly. The horizontal four-axis blender is provided with a body, a left blending system, and a right blending system; the left blending system is provided with a left outer blending mechanism, and a left inner stirring mechanism which are horizontally arranged; the left inner blending mechanism is internally arranged in the left outer blending mechanism, and is axial with the left outer blending mechanism; the right blending system is provided with a right outer blending mechanism, and a right inner stirring mechanism which are horizontally arranged; the right inner blending mechanism is internally arranged in the right outer blending mechanism, and is axial with the right outer blending mechanism; and the left outer blending mechanism and the right outer blending mechanism are crossly arranged along different axial directions, with different rotating directions and consistent rotating speeds.