The utility model discloses a petroleum product kinematic viscosity tester, including viscosity measurement transparent container and the viscosity measuring apparatus of setting in the viscosity measurement transparent container upper end, viscosity measurement transparent container's inside is equipped with motion viscosity measurement subassembly, viscosity measuring apparatus connects kinematic viscosity measurement element, viscosity measurement transparent container's inside is equipped with the baffle, the baffle is the detection chamber of top and the drive chamber of below with viscosity measurement transparent container's internal partitioning, kinematic viscosity measurement element is located the detection intracavity, detect the chamber near being equipped with the drain pipeon the lateral wall of lower extreme, the drive intracavity is equipped with driving motor, and driving motor fixes the lower extreme at the baffle, driving motor's output shaft end runs through baffle and fixedly connected with rabbling mechanism. The utility model discloses simple structure, convenient operation can conveniently clear up viscosity measurement transparent container, and detectioneffect is good, and it is convenient to remove, is fit for promoting.