A sleep testing method, a sleep testing apparatus, a sleep-aiding device and a sleep-aiding method. The sleep testing method comprises: acquiring an electroencephalogram signal of a user (S10); processing the electroencephalogram signal to obtain energy values of the electroencephalogram signal in a plurality of set frequency bands (S20); calculating a relative energy value of the electroencephalogram signal in the plurality of set frequency bands (S30); and determining a sleep state, mental stress and the degree of fatigue according to the relative energy value (S40). According to the sleep testing method, the sleep state, the mental stress and the degree of fatigue of a user can be simultaneously determined just according to an electroencephalogram signal, and a plurality of pieces of testing data related to sleep can be obtained in a single instance of testing.
SLEEP TESTING METHOD AND APPARATUS, AND SLEEP-AIDING DEVICE AND METHOD