An automated precision management method for a sample analysis system, characterized in that the method comprises the following steps: testing samples to be analyzed by a hematology analyzer, to obtain first test results of the samples to be analyzed, wherein the samples to be analyzed are fresh blood samples of patients; when a preset condition for triggering quality control is satisfied, selecting, by a controller, a quality control sample from the samples that have been tested, based on the first test results obtained by the hematology analyzer; controlling, by the controller, a dispatching apparatus (150, 160) to transfer the quality control sample to a smearing machine; preparing a quality control blood smear from the quality control sample by the smearing machine; staining the quality control blood smear by a staining machine; controlling, by the controller, the dispatching apparatus (150, 160) to transfer the quality control blood smear to a cell image analysis apparatus; imaging and analyzing the quality control blood smear by the cell image analysis apparatus, to obtain a second test result; comparing the first test result with the second test result of the quality control sample; outputting a result of the comparison; and automatically performing, by the controller, quality control on the hematology analyzer or the cell image analysis apparatus wherein, if the first test result is used as a baseline, then it can be determined through the comparison whether the second test result is accurate, so as to perform quality control on the cell image analysis apparatus; and if the second test result is used as a baseline, it can be determined through the comparison whether the first test result is accurate, so as to perform quality control on the hematology analyzer. testing samples to be analyzed by a hematology analyzer, to obtain first test results of the samples to be analyzed, wherein the samples to be analyzed are fresh blood samples of patients; when a preset condition for triggering quality control is satisfied, selecting, by a controller, a quality control sample from the samples that have been tested, based on the first test results obtained by the hematology analyzer; controlling, by the controller, a dispatching apparatus (150, 160) to transfer the quality control sample to a smearing machine; preparing a quality control blood smear from the quality control sample by the smearing machine; staining the quality control blood smear by a staining machine; controlling, by the controller, the dispatching apparatus (150, 160) to transfer the quality control blood smear to a cell image analysis apparatus; imaging and analyzing the quality control blood smear by the cell image analysis apparatus, to obtain a second test result; comparing the first test result with the second test result of the quality control sample; outputting a result of the comparison; and automatically performing, by the controller, quality control on the hematology analyzer or the cell image analysis apparatus wherein, if the first test result is used as a baseline, then it can be determined through the comparison whether the second test result is accurate, so as to perform quality control on the cell image analysis apparatus; and if the second test result is used as a baseline, it can be determined through the comparison whether the first test result is accurate, so as to perform quality control on the hematology analyzer.