Disclose a kind of method and apparatus, the improvement of slow wave sleep. This method includes recording bio signal to use electrode system from the patient of skin area. The detection of the slow wave stage NREM sleep is by analyzing oscillation rate bio signal. If slow wave stage is detected, threshold value electrocutaneous stimulation is applied to improve the quality of sleep. Described embodiment is related to a kind of device, includes electrode system, measuring unit, treatment unit and processor for improving slow wave sleep. Processor is coupled to measuring unit, corresponds to electrodermal activity bio signal for receiving. Processor process bio signal treats patient with slow wave sleep stage and activation therapeutic unit transportation to threshold value electrocutaneous with determining, to mention the slow wave sleep stage.
