Gas treatment and recovery system and oven system

The utility model discloses a gas treatment and recovery system and a drying oven system. The gas treatment and recovery system comprises gas boxes for generating target gas and a gas treatment device for treating the target gas, the gas boxes comprise a plurality of first gas boxes and a plurality of second gas boxes, and to-be-treated gas in the first gas boxes is different from to-be-treated gas in the second gas boxes; the air outlet of each first gas box is connected with the air inlet of at least one second gas box, and the air inlet of each second gas box is connected with the air outlet of at least one first gas box; a first valve is arranged between any first gas box and any second gas box which are connected; the first valves are independently opened or closed; the air outlet of each second gas box is communicated with the air inlet of the gas treatment device, and the air inlet of each first gas box is communicated with the air outlet of the gas treatment device. The gas treatment device is used for improving the heat energy utilization rate of the gas generated in the drying oven, reducing the treatment capacity and reducing the energy consumption.