The utility model creatively discloses a road bed concrete -based bed structure, has several sections concrete -based beds and the ballastless track that sets up at several sections concrete -based beds, every section concrete -based bed divide into C35 concrete layer from top to bottom in proper order, and C20 concrete layer mixes 5% cement graded broken stone layer, and the packing layer, the bed at concrete -based is laid to ballastless track number of pass festival bed plate, has the expansion joint between the adjacent concrete -based bed, gap phase -match between expansion joint and the adjacent bed plate, every section concrete -based bed is the setting of aliging with corresponding bed plate. Can guarantee that the foundation bed concrete freely stretches out and draws back and severe cold district freeze thawing state stability down, ensure finally that ballastless track's geometry states do not change because of the temperature variation.