A distribution machine used in a concrete component production system comprises a machine frame, a distribution box arranged on the machine frame, a feeding hopper communicated with the distribution box, a storage tank communicated with the feeding hopper, a weighing mechanism and a feeding mechanism, wherein the weighing mechanism and the feeding mechanism are arranged on the machine frame. The feeding mechanism comprises a first drive device, a wheel shaft, star wheels and partition sleeves, wherein the wheel shaft is arranged in the distribution box and connected with the first drive device, the star wheels are arranged on the wheel shaft at intervals, and the partition sleeves are arranged between adjacent star wheels, a discharging opening is formed in the position, corresponding to the star wheels, at the bottom of the distribution box, a discharging gate plate is arranged on the discharging opening, and the discharging gate plate is matched with the distribution box in a sliding mode. The distribution machine has the advantages that distribution is uniform and stable, feed amount of concrete can be conveniently and quickly controlled according to actual needs, distribution efficiency is improved, precise measuring of the material quantity is achieved, waste of raw materials is reduced, and quality of products is well guaranteed.