The invention discloses an ocean wave buoy based on a parallel piezoelectric type six-dimensional acceleration sensor. The ocean wave buoy comprises a buoy body, a sensor system and a control system,wherein the control system arranged in the buoy body integrates wave acceleration information, wind speed information, wind direction information and azimuth angle information which is sent by an electronic compass, separately processes the characteristics of waves at the position of the ocean wave buoy body and meteorological data to calculate the main wave direction, the wave height, the wave period, the actual wind direction and the actual wind speed, and sends the calculated main wave direction, the wave height, the wave period, the actual wind direction and the actual wind speed to a monitoring system on a user side through a communication module. By means of the ocean wave buoy, the technical problems that ocean waves are observed can be solved, and the limitations in the prior art can be overcome; the wave characteristics, such as the wave height, the wave period and the wave direction, of the ocean waves and the meteorological factors, such as the wind speed and the wind direction, can be observed.