The invention discloses a biomass gas parallel production system. The biomass gas parallel production system comprises a parallel screw feeder, a high angle conveyor, a belt conveyor, a biomass gasifier, a cyclone separator, a spray tower, a gas-liquid separator and an electrical tar precipitator. By adopting the biomass gas parallel production system, many gasifiers are connected in parallel to form an integrated gas generation platform, a parallel material transporting system and a parallel purifying system are assorted so that the production equipment is optimally configured, the vacancy time of the production equipment can be reduced, the uniformed plan and production management can be benefited and the manpower can be integrated and saved, and the overall operation cannot be influenced when the partial equipment of the system is troubleshot.