The polarization properties of a whispering-gallery-mode (WGM) fiber laser pumped by the evanescent wave of skew beam are studied. It is found from the experiments that when pump beam transmits in a bared optical fiber in skew way,both transverse electric (TE) wave and transverse magnetic (TM) wave exist in the laser emission,and the wave-number difference between TE and TM waves decreases monotonely with the increase of the refractive index of cladding solution. Based on the excitation mechanics of evanescent-wave pumped WGM fiber laser and the analytic asymptotic formula to determine the resonant positions of a WGM,the observed experimental results are well explained.