In this paper, a dual-mode dual-polarization wearable textile antenna with the metasurface is proposed. Specifically, the two modes include an omnidirectional left-hand circularly polarized mode for on-body communication and a directional linearly polarized mode for off-body communication. Excited by a circular patch antenna loaded with the L-shaped slot, a pair of orthogonal omnidirectional modes of the metasurface are used to realize the on-body mode. The off-body mode is realized by using a patch antenna to excite the directional mode of the metasurface. The proposed antenna operates in the 5.8 GHz ISM band. The -10dB impedance bandwidths for on-body and off-body communication modes are 6.4% (5.59-5.96 GHz) and 16.5% (5.08-6.04 GHz), respectively, with the effective axial ratio bandwidth of 6.4% (5.59-5.96 GHz) for the on-body communication mode. The port isolation exceeds 20 dB.