A sample analysis apparatus and a sample analysis method. The method includes preparing a specimen by means of a sample and a reagent, the sample being a blood sample or a body fluid sample. The specimen is tested to obtain one or more testing parameters of the sample with respect to particles; and for at least one testing parameter, control is performed according to the magnitude of the testing parameter to display the testing parameter with different precisions. By performing the control according to the magnitude of a testing parameter to display the testing parameter with different precisions, a result requirement of a low-value sample, such as a body fluid sample, can be satisfied.