To produce a concrete block by charging ready-mixed concrete into a form without needing a special apparatus and a large space and to be used in the on-site placing of the ready-mixed concrete.

A charging means 5 is fitted to a mobile vehicle 2 having a crawler 3 through a movable means 4. The charging means 5 is composed of a hopper 29 for housing the ready-mixed concrete, a chute 6 for charging the ready-mixed concrete into the form 34, and a charging port member 33. The movable means 4 is composed of a turn table 8 for rotating the charging means 5 around a vertical shaft, a reciprocation mechanism 10 for reciprocating the charging means 5 in a constant direction, and a vertical movement mechanism 11 for moving the charging means 5 vertically. A ready-mixed concrete charging apparatus 1 is made to be remote-controlled easily only by one operator by being controlled with the use of a remote control device 7.