The utility model discloses a concrete assembled basis, including chassis, bottom plate and basic stand, the chassis center is equipped with the lug, the lug is regular polygon, the bottom plate is two, and one side center is equipped with the notch, two bottom plates splice mutually to locate the chassis upper end through the bolt fastening, the lug looks adaptation on shape and chassis is spliced to the concatenation of two bottom plates shapes and chassis looks adaptation, notch, basis stand lower extreme is hollow cylinder, the basis stand passes through lower extreme hollow cylinder and overlaps on the lug on chassis to through the bolt fastening on the bottom plate, hollow cylinder's interior circle is circumscribed with the lug, the last pouring hole that is equipped with of hollow cylinder, pouring hole is linked together with the boring part. The utility model discloses the location that concrete assembled basis utilized the lug at chassis center to carry out bottom plate and basic stand makes things convenient for and aims at whole bolts simultaneously, and the installation is convenient, accurate more, has avoided the damage to the bolt screw thread.