Formaldehyde detection device and formaldehyde detection method

The invention relates to the technical field of formaldehyde detection, and discloses a formaldehyde detection device and a formaldehyde detection method.The formaldehyde detection device comprises a box body, gas guide assemblies are arranged on the two sides of the box body, purification boxes are arranged on the sides, located in the box body, of the gas guide assemblies, and an adjusting assembly is arranged at the top of the side, located in the box body, of each gas guide assembly; the device is simple in structure and novel in design, dust and other particles are prevented from being melted in a phenol reagent to affect color change, the detection precision is improved, the phenol reagent can be conveniently detected by observing the color change after the reaction of the phenol reagent and gas, and the detection accuracy is improved. The device is convenient to use, prevents the situation that gas after reaction is sucked into the reagent bottle again by the negative pressure fan to cause inaccurate d