The utility model provides a gas -liquid diverging device and system, wherein, gas -liquid diverging device includes: tubular column, bottom plate, tee bend air guide tubular column and catheter, the bottom end sealing connection of bottom plate and tubular column is provided with first through -hole on the bottom plate, the catheter setting is in the below of bottom plate, and the catheter is through the inside intercommunication of first through -hole with the tubular column, tee bend air guide tubular column sets up the inside at the tubular column, tee bend air guide tubular column includes the outlet duct of the intake pipe and a vertical direction of two horizontal directions, and the top of outlet duct is higher than the top surface of tubular column, be provided with the second through -hole of two symmetries on the lateral wall of tubular column, every intake pipe is connected with a second through -hole respectively. The utility model provides a gas -liquid diverging device has promoted water drive gas reservoir's output and has mineed efficiency.