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In view of the current inability to accurately quantify the health status of on-orbit satellites, A health state hierarchical evaluation model based on the logical connection relationship of satellite components is proposed. Using task health and mission risk to quantitative representation of satellite status. At the element level, Establish a component level nonlinear dimensionless evaluation model by statistical historical health data and reviewing design data. At the component level, Establish an evaluation model by logical connection of each element. At the subsystem level, Using the results of component layer and the logical connection relationship of each component, combined with fuzzy analytic hierarchy process and variable weight theory to establish health assessment model for subsystem. At last, Verification of on-orbit telemetry data through the normal data and abnormal data, The results show that the evaluation model is correct.