Concrete mixing plant and aggregate feeding method thereof

The invention discloses a concrete mixing plant and an aggregate feeding method. The aggregate feeding method of the concrete mixing plant comprises the steps that the current material amount of aggregate in each upstairs stock bin is obtained in real time; if the current material quantity of the aggregate of the first upstairs stock bin in the at least two upstairs stock bins is smaller than a first set threshold value, the feeding device is controlled to feed materials into the first upstairs stock bin; in the process of controlling the feeding device to feed materials to the first upstairs feed bin, if the material quantity of the aggregate of the second upstairs feed bin in the rest upstairs feed bins is smaller than a first set threshold value, feeding to the first upstairs feed bin is continued, and feeding to the first upstairs feed bin is stopped after the material quantity of the aggregate of the first upstairs feed bin is larger than a second set threshold value; and the feeding device is controlled