A new type of polymer optical fiber connector based on the upside-down tapered lens (UDTL) technique was proposed. To increase the numerical aperture of polymer fiber and reduce the requirement of fiber ends to registration precision,the fiber end of the connector was created into an upside-down taper lens. The optical characteristics of the connector have been tested. Over 75 percent of coupling efficiency between the light source and the UDTL fiber end is in the range of 5.4 dB to 6.0 dB. More than 70 percent of connecting losses are in the 2.1 dB～2.7 dB range. The insertion losses are in the range from 2.2 dB to2.58 dB as the same suite of optical fiber jumper was inserted and drawn 200 times. The measured dates show that the performance of UDTL polymer fiber connector can meet the demand of fiber to the home.