In this work, a transverse magnetic (TM)-pass polarizer based on subwavelength grating (SWG) on the emerging potential hybrid silicon-LNOI platform is proposed. By integrating silicon material onto the LNOI platform, the optical power of TE0 and TM0 modes is judiciously distributed to distinct regions. This design not only effectively blocks the TE0 mode but also enables low-loss transmission of the TM0 mode, thereby achieving a balanced manipulation of both polarizations. Due to the strong reflection of TE0 mode by SWG, a polarizer is realized with a high polarization extinction ratio (PER) and low insertion loss (73 dB and 0.37 dB respectively at 1550 nm) in a compact size (device length is 23.38 μm). Moreover, the PER is beyond 50 dB and the insertion loss is under 0.46 dB in a broad wavelength range of 1525 to 1585 nm.