The utility model discloses a concrete mixer, it relates to concrete mixer technical field, it contains the support base, support the cushion cap, first order support column, and a control panel, thedisplay, storage drawers, the 2nd agitator motor, the second (mixing) shaft, second stirring storehouse, the stirring roller, ejection of compact pipeline, first stirring storehouse, first (mixing) shaft, a feeding section of thick bamboo, an agitator motor and second level support column, support the base upside and support cushion cap fixed connection, support cushion cap right -hand member upside and install first order support column, first order support column left side is provided with control panel, control panel installs the display in the left side, the 2nd agitator motor is installedto the storage drawers upside. Its structural design scientific and reasonable, the pleasing to the eye novelty of appearance can guarantee that user of service carries out convenient operation and use, can enough reduce the input cost fund of saving simultaneously, improves economic benefits, can reduce operation error rate again, realizes energy -efficient environmental protection, is favorableto using widely on a large scale.