The invention provides a multifunctional adjustable low-pollution combustion visualization device. The multifunctional adjustable low-pollution combustion visualization device is characterized by comprising a combustion chamber, a gas inlet device and a tail gas treatment device, wherein the gas inlet device comprises a gas inlet inner pipe and a gas outlet outer pipe; the gas inlet inner pipe islocated in the gas inlet outer pipe; a first fuel inlet is formed in the gas inlet inner pipe; the gas outlet outer pipe is respectively provided with a second fuel inlet and an oxidant inlet; the gasinlet inner pipe and the gas inlet outer pipe are jointly conducted with the combustion chamber through a swirler; the combustion chamber is a visible combustion chamber; a plurality of spraying pipes used for spraying air into the combustion chamber are arranged on the combustion chamber; and the tail gas treatment device is connected with the combustion chamber. The multifunctional adjustable low-pollution combustion visualization device is capable of generating different turbulence intensities, stable swirl air flow and stable high-speed back-blowing jet flow and carrying out quantitativeresearch on the influence of parameters such as turbulence intensities, swirl number and entrainment rate on combustion processes and combustion products.