The invention relates to a detection and removal method for biomass carbonization equipment pipeline coke button.The method comprises the main steps of 1, temperature detection; 2, thickness and temperature calculation; 3, judgment on whether scaling is performed or not; 4, starting of a mechanical shovel blade.According to the first step, a surface temperature detector is utilized, the temperature of the outer wall of a biomass pyrolysis carbonization equipment pipeline is measured, and the temperature T1 is obtained.According to the second step, the temperature of pyrolysis gas inside a thermal electric couple pipeline built inside the pipeline is T2, the temperature near the inner wall is obtained as T3 according to the inner diameter of the pipeline, and the temperature T4 of the outer wall of the pipeline is calculated according to the temperature T3 and pipe wall materials (for example, a 304 stainless pipe, the thickness is d, the inner diameter is 2r and the heat conductivity coefficient is lambda).According to the third step, when it is determined that T1 is smaller than T4, the coke button forming state is formed.According to the fourth step, a removal procedure is started, removal is executed through the mechanical shovel blade, and detection and removal of coke button inside the pipeline are completed.