Recently, some textile and garment manufacturers in the market have not standardized the name and content of fabric components, which has led to unscrupulous merchants taking the opportunity to shoddy and deceive consumers. In order to help consumers accurately identify the main real components of clothing fabrics, this paper introduces simple identification common sense for consumers to refer to when purchasing clothing. The simple method to identify the composition of clothing fabric is combustion method. The method is to draw a thread of cloth yarn containing warp and weft from the seam edge of the garment, ignite it with fire, observe the state of the burning flame, smell the smell of the cloth yarn after burning, see the residue after burning, and judge whether it is consistent with the fabric composition marked on the durability label of the garment, so as to distinguish the authenticity of the fabric composition. First, cotton fiber and hemp fiber burn immediately near the flame, burning quickly, and the flame is yellow and emits blue smoke. The difference between the smell of burning and the ashes after burning is that cotton burns with paper flavor and marijuana burns with plant ash flavor; After burning, cotton has little powder ash, which is black or gray, while hemp produces a little gray powder ash. Second, wool fibers and silk hairs smoke in case of fire, bubble when burning, and the burning speed is slow, giving off the burnt smell of burnt hair. After burning, the ashes are mostly shiny black spherical particles, which will be broken when a finger is pressed. Silk shrinks into a ball when it meets fire, and the burning speed is slow, accompanied by hissing, giving off the smell of burning hair. After burning, dark brown spherical ash is formed, which will be broken by hand twisting. Three, nylon and polyester nylon scientific name polyamide fiber, near the flame, quickly curled and melted into white gel, melted and burned in the flame, dripping and foaming, no flame when burning, it is difficult to continue burning without flame, emitting celery flavor, light brown melt is not easy to grind after cooling. Polyester fiber, the scientific name of polyester fiber, is easy to ignite and melt near the flame. When burning, it emits black smoke while melting, showing a yellow flame and emitting an aromatic smell. After burning, the ash is a dark brown lump that can be crushed with your fingers. Four, acrylic fiber and polypropylene fiber acrylic fiber, softening and melting near the fire, black smoke after the fire, the flame is white, burning quickly after leaving the flame, emitting the bitterness of burnt meat, and the ashes after burning are irregular black lumps, which are fragile by hand twisting. Polypropylene fiber, the scientific name of polypropylene fiber, is flammable when it melts near the flame. It burns slowly away from the fire, emitting black smoke. The upper end of the flame is yellow and the lower end is blue, giving off a smell of oil. After burning, the ash is hard, light yellow-brown particles and fragile by hand twisting. Five, polyvinyl formal fiber, scientific name vinylon, polyvinyl chloride vinylon, not easy to ignite, close to the flame melting shrinkage. When it burns, there is a little flame at the top. When the fiber melts into gel, the flame becomes bigger, emitting thick black smoke and bitter taste. After burning, small black beads will be left, which can be crushed with your fingers. The scientific name of PVC fiber is PVC fiber, which is difficult to burn. It goes out immediately after leaving the fire. The flame is yellow, and the lower end is green and white smoke, emitting pungent, pungent and sour taste. The burnt ash is dark brown and irregular, which is not easy to be broken by fingers. Six, spandex and spandex scientific name polyurethane fiber, melting and burning near the fire, the flame is blue when burning, and it continues to melt and burn away from the fire, emitting a special pungent smell, and the ashes after burning are soft and fluffy black ash. The scientific name of fluorine fiber is polytetrafluoroethylene fiber, and ISO organization calls it fluorite fiber. It only melts near the flame, but it is difficult to ignite and does not burn. The edge flame is blue-green carbonization, melting and decomposition, and the gas is toxic. The melt is hard round black beads. In the textile industry, fluorine fiber is often used to make high-performance sewing thread. Seven, viscose fiber and copper ammonium fiber viscose fiber is flammable, burning rapidly, the flame is yellow, giving off the smell of burning paper, and after burning, the ash is less, smooth and twisted, and it is light gray or grayish white powder. Copper ammonia fiber, commonly known as tiger kapok, burns near flame, with fast burning speed, yellow flame and acid ester. There is little ash after burning, only a small amount of gray-black ash. Taking a fancy to Xinjiang market, the first cotton resource futures company in the mainland seized the opportunity.