The invention discloses a wind power detection device for any direction in space. The device is used for measuring wind power (wind direction and wind speed) changing freely at any time in any three-dimensional space and can be used for finding the changing shape of wind power in any wind field and space wind flow distribution so that the installation position and the installation height of a wind driven generator can be determined most reasonably, and wind power can be fully utilized so that power generation efficiency can be improved. The device can be used for monitoring wind power (wind speed and wind direction) in any direction of the space and comprises a spherical outer cover (1), center rotating blades (2), a measuring unit (4), a wireless communication unit (5) and a power source (6). The device is mainly characterized in that the outer shape of the device is of a spherical lattice structure, the rotating blades can rotate in any direction along with wind in the three-dimensional space in the spherical cover, and the purpose of measuring the wind power in any direction of the space at each instant is achieved; the device is used for integrally measuring winding speed and wind direction at the same time.