The invention specially relates to an analysis method of brain electricity of a forehead area. By means of testing and sampling, a reference brain electricity signal of the forehead is obtained, and an ocular electricity noise average waveform is extracted from the reference brain electricity signal. Band-pass filtering waves and notching filtering waves are adopted for removing high-frequency noise and power-line interference noise during real-time processing of brain electricity data to obtain a real-time primarily-filtered brain electricity signal of the forehead. According to a preset amplitude threshold value of the ocular electricity noise, blink cycle of the real-time primarily-filtered brain electricity signal of the forehead is extracted, and a method for overlapping the ocular electricity noise average waveform is adopted for counteracting the noise interference caused by blink in the real-time primarily-filtered brain electricity signal of the forehead. According to the analysis method of the brain electricity of the forehead area, purification and noise removal can be conducted on brain electricity data of a single electrode without arrangement of ocular electricity collecting electrodes, the signal-to-noise ratio of the brain electricity signal can be increased, and meanwhile, since a method for extracting a standard ocular electricity waveform in advance is adopted, the time for processing data in the later period is shortened, and the requirement for instantaneity is better met.