Parallel tangential flow filtering device capable of killing bacteria in wet and hot mode

The invention relates to a parallel tangential flow filtering device capable of killing bacteria in a wet and hot mode. For the conventional tangential flow filtering devices, multiple independent filtering devices are parallelly connected, each penetration end should be connected to an output pipe, the pipelines are increased, and the volume becomes very large. The provided device can solve the problems mentioned above. The filtering device comprises a backflow area, a filter membrane area, a liquid inlet area, and a permeation area. The filter membrane area comprises a plurality of liquid inlet channels and permeation channels, which are connected through hot melting and partitioned by filter membranes. The liquid inlet area is an integral structure, and comprises a liquid inlet and multiple liquid sub-channels. The backflow area is an integral structure, and comprises backflow channels that are communicated with backflow ends of each liquid inlet channel and a backflow converging channel. The permeation ar