The invention provides a grinding and measuring mechanism of a spring type tensioner of a motorcycle. The grinding and measuring mechanism comprises a machine frame, a grabbing mechanism, a rotating mechanism, a pressurizing mechanism, a displacement sensor mechanism, a sliding rail, a sliding rail mounting plate, a buffer I, a buffer I mounting plate, a sliding block, a first air cylinder mounting plate, a T-shaped groove plate, a buffer II, a buffer II mounting plate and a first air cylinder, wherein the grabbing mechanism is arranged at the left part of the upper end of the machine frame, the rotating mechanism is arranged at the left part of the lower end of the machine frame, the pressurizing mechanism is arranged at the front part of the upper end of the machine frame, the displacement sensor mechanism is arranged at the rear part of the upper end of the machine frame, the sliding rail mounting plate is fixed at the rear part of the upper end of the machine frame, and the slidingrail mounting plate is connected with the sliding rail. The design of the grinding and measuring mechanism is convenient to use, reasonable in structure, safe, sanitary, free of pollution, high in automation degree and high in packaging efficiency, so that a lot of manpower and material resources can be saved, and the economic benefits are improved.