Compared with other diagnostic techniques, the planetary polarimetry becomes more efficient to probe the details about the surface features of an exoplanet, and especially the polarimetry of our planet, the Earth, is useful to search for the Earth-like exoplanet. In this paper, the Earth is treated as a planet resolvable from its host star but its disk is unresolved. The data from the polarimeter boarding French satellite PARASOL are used to get the polarimetric results of 5 surface features as well as cloud within the band of 662.4-677.4 nm. The results are expressed in the curves which reflect the variations of linear polarization degree and albedo with the scattering and azimuth angles, respectively. Under the special case that the scattering angle is set to be 90 degrees, the polarization curves of the Earth in a rotation period are obtained. It is found that the polarization degree is mainly influenced by the ocean as well as the cloud, ranging from 18.6% to 49%. And due to the rapid climate change on the Earth, the polarization can be altered rapidly. This characteristic will help us to distinguish the Earth-like exoplanet from other types of exoplanets.