NOVELTY - An enhanced assembled microbial action artificial wetland device comprises artificial wetland tank (1), water inlet pipe (10-b), aeration device, water outlet unit, and immobilized microorganism plate (5) in which artificial wetland tank comprises furfural residue layer (2), steel slag layer (3), gravel layer (6), and immobilized microorganism layer, immobilized microorganism layer is installed on immobilized microorganism plate, and lower side of aerobic immobilized microorganism layer is installed on aerating device comprising aerating pipe (10-a) and aerating branch tube (13-a).    USE - An enhanced assembled microbial action artificial wetland device (claimed).    ADVANTAGE - Device is low cost, immobilizes microorganism, improves sewage treatment effect, and has small floor area.    DETAILED DESCRIPTION - An enhanced assembled microbial action artificial wetland device comprises artificial wetland tank (1), water inlet pipe (10-b), aeration device, water outlet unit, and immobilized microorganism plate (5) in which artificial wetland tank comprises furfural residue layer (2), steel slag layer (3), gravel layer (6), and immobilized microorganism layer, immobilized microorganism layer is installed on immobilized microorganism plate, lower side of aerobic immobilized microorganism layer is installed on aerating device comprising aerating pipe (10-a) and aerating branch tube (13-a), aerating pipe is passed through wall, main aerating pipe is installed on gas valve (11-a) and gas flow meter (12-a), lower side of aerating device is set with water inlet pipe and water distributing branch tube (13-b), water inlet pipe is passed through wall, water inlet pipe is installed on liquid valve (11-b) and liquid flow meter (12-b), steel wire (4) is set between immobilized microorganism layer and gravel layer, water outlet unit comprises water hole (9), water collecting groove (7), and water collecting groove discharging tube (8), water outlet unit is set on end of artificial wetland tank and opposite with water inlet pipe, artificial wetland tank mainly comprises upper tank body (1-a), intermediate tank body (1-b), and bottom tank body (1-c), bottom wall of upper tank body is set with convex port, upper wall of intermediate tank body is set with convex port, upper wall of bottom tank body is set with groove, tank body is coincided with convex port and groove, and steel plate material is used to construct artificial wetland tank.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of enhanced assembled microbial action artificial wetland device.    Artificial wetland tank (1)    Upper tank body (1-a)    Intermediate tank body (1-b)    Bottom tank body (1-c)    Furfural residue layer (2)    Steel slag layer (3)    Steel wire (4)    Immobilized microorganism plate (5)    Gravel layer (6)    Water collecting groove (7)    Water collecting groove discharging tube (8)    Water hole (9)    Aerating pipe (10-a)    Water inlet pipe (10-b)    Gas valve (11-a)    Liquid valve (11-b)    Gas flow meter (12-a)    Liquid flow meter (12-b)    Aerating branch tube (13-a)    Water distributing branch tube (13-b)