Centrifugal rotor used for fluid sample index detection

The utility model provides a centrifugal rotor used for fluid sample index detection. The centrifugal rotor comprises a sample accommodating chamber, a distributing runner and a plurality of sample receiving and detecting chambers, wherein the distributing runner is communicated with the sample accommodating chamber by a micro-channel; the plurality of sample receiving and detecting chambers are respectively communicated with the distributing runner by an inlet runner; the sample accommodating chamber is radially closer to the inner side than the distributing rubber; the sample receiving and detecting chambers are radially closer to the outer side than the distributing runner; flow resistance of the samples in a micro-channel is greater than the flow resistance of the samples at the inlet runner and the distributing runner, so that cross section area of the fluid passing through the inlet runner and the distributing runner is smaller than that of the runner, and therefore, air is exhausted from the chamber th