Control method and system for circulating multi-channel fluid distribution device

The invention relates to the technical field of technological process control, and discloses a control method and system for a circulating multi-channel fluid distribution device, and the method comprises the steps: obtaining the switching information of each valve array group when the circulating multi-channel fluid distribution device executes a first round of step sequence, and the circulating backward movement amount of the valve array group; starting the circulating multi-channel fluid distribution device according to the opening and closing information of each valve array group, so that the opening and closing state of each valve is consistent with the opening and closing information of each valve array group when the circulating multi-channel fluid distribution device executes the first round of step sequence; and if the circulating multi-channel fluid distribution device meets the preset step sequence switching condition, the switching information of each valve array group is updated according to the