An incineration treatment device for waste gas and liquid in the organic silicon industry, comprising a blower (1), an incinerator (2), a waste heat boiler (3), a first cyclone dust collector (4), and a second cyclone dust collector (5) , Quenching Tower (6), Falling Film Absorber (7), Primary Water Washing Tower (8), Secondary Water Washing Tower (9), Alkaline Washing Tower (10), Pipeline Heater (11), Bag Filter (12 ), activated carbon adsorption tower (13), induced draft fan (14), chimney (15), fly ash conveying system, ash bin (24), quenching acid storage tank (27), falling film acid storage tank (28), high level water Tank (29), quenching heat exchanger (30), quenching circulating pump (31), falling film circulating pump (32), primary washing circulating pump (33), secondary washing circulating pump (34), alkaline washing circulating pump (35), filter press system; the present invention incinerates chlorine-containing silicon-containing waste gas and waste liquid in organic silicon production, and is suitable for treating chlorine-containing silicon-containing waste gas and waste liquid produced in the organic silicon industry.