The invention discloses a digital insomnia therapy instrument and a therapy method. The digital insomnia therapy instrument comprises an acusector or an electrode plate, a central processing unit, a memory, a sleep brain wave collecting module, a sleep rhythm extracting module, a sleep rhythm combining module, a digital-to-analog (D/A) converting circuit, a filter circuit, a sampling circuit and a pulse amplifying circuit, wherein the memory, the sleep brain wave collecting module, the sleep rhythm extracting module and the sleep rhythm combining module are respectively connected onto the central processing unit, the D/A converting circuit, the filter circuit, the sampling circuit and the pulse amplifying circuit are sequentially connected between the sleep brain wave collecting module and the acusector or the electrode plate. Therefore, sleep brain wave signals are subjected to collection, extraction, combination, digital-to-analog conversion, filtering, sampling and amplification, medical pulse signals are formed, the medical pulse signals are exerted on an acupuncture needle or the electrode plate and are guided into the brain of an insomnia patient through relevant acupuncture points for inducing the brain of the patient to generate sleep waves or enhancing weak sleep waves generated in the brain of the patient, so the patient enters the sleep state and gradually enters the deep sleep state.