The invention provides a method, a device and a system for controlling mass stability of dry-basis coke charged into a blast furnace; under the condition that the change of the coke particle size is less, volume measurement parameters for coke charged into the blast furnace are obtained, wherein the volume measurement parameters comprise material distribution time t, a material flow opening degree gamma, and a throttle valve side length l; an actual volume q of coke charged into the blast furnace is calculated according to the above volume measurement parameters; additionally, a fluctuation range of the coke volume q1 of the dry-basis coke in the blast furnace in a stable furnace condition state is obtained; when the volume q of the coke actually charged into the blast furnace exceeds the fluctuation range of the coke volume q1 of the dry-basis coke in the blast furnace in a stable furnace condition state, the coke moisture is adjusted according to a predetermined rule so as to allow q to be within the fluctuation range of q1. Through stabilization of the coke volume, the invention realizes the purpose of stabilizing the mass of the dry-basis coke charged into the blast furnace; and the method, the device and the system of the invention is simple in operation and low in investment.