Rugby-shape optical micro-resonators with diameters of 10~300 μm are fabricated by drawing poly (trimethylene terephthalate) (PTT) microwires immersed in biocompatible polyvinylpyrrolidone (PVP) polymer aqueous solution. Resonating characteristics are observed by coupling 532 nm green light and 671 nm red light respectively into the rugby-shape optical micro-resonators with diameters of 94.7 μm and 68.3 μm. By coupling 1549~1552 nm light into the rugby-shape optical micro-resonator with a diameter of 94.7 μm, absorption spectra are obtained and whispering gallery mode-based absorption peaks are observed, with a measured quality factor of 1.05×105.