The invention discloses a wind power subsynchronous oscillation detection and inhibition method based on empirical mode decomposition, comprising: employing an empirical mode decomposition algorithm to respectively rapidly decompose collected three phase current signals, respectively comparing the amplitude of each decomposed low frequency signal with a set value, and determining occurrence of subsynchronous oscillation according to comparison results. The subsynchronous oscillation decomposition and extraction method based on empirical mode decomposition can perform decomposition completely according to the self time scale characteristic of current signal data; a decomposition process more comprehensively extracts and maintains the main characteristics of an original signal, and meanwhile improves the conciseness and flexibility of signal expression.