A　series　of　thermotropic　liquid　crystalline　polyamides(PEGOT)　with　high　molecular　weights　were　synthesized　by　solution　polycondensation　of　4,　4-diamino-3,　3-dimethylbiphenyl(OT)　with　polyethyleneglycol　bis(4-carboxyphenyl)　ethers　(PEGn,　n=1,　2).　Polymers　prepared　were　characterized　by　infrared　spectrum　(IR)　and　1H　nuclear　magnetic　resonance　spectrum　(1H-NMR),　and　their　expected　structures　were　identified.　These　thermotropic　polyamides　were　found　to　have　stable　nematic　mesophases　by　differential　scanning　calorimetry　(DSC)　and　polarizing　microscope　(POM).　Moreover,　their　crystallinity　and　thermal　stability　were　investigated　with　wide　angle　X-ray　diffraction　(WAXD),　differential　scanning　calorimetry　(DSC)　and　thermogravimetry　analysis(TGA).　And　the　results　of　this　work　can　be　valuable　and　provide　a　primary　reference　for　the　practical　application　of　these　thermotropic　polyamides.