This study attempted to find out the effectiveness of sign language training to the communication of parents and their child with hearing impairment. Specifically, it aimed to find out how does the sign language skills of parents improve before and after the intervention, and the significant improvement between the communication of parents and their child with hearing impairment. The ABA method was the research design used in the study. The intervention dated December 9, 10, 11, 12, 14. The training lasted for 10 sessions. Each session was done for one hour. The data gathering instruments were analyzed through interview and researcher-made test. The participants of this study were the 3 parents of children with hearing impairment at Leganes Resource Center for the Deaf during the academic year 2015-2016. These parents were purposively chosen and they agreed to be the subject of the study because they experience difficulty in communicating to their children with hearing impairment through sign language. The study revealed that the sign language training is effective in bridging the communication gap between parents and their child with hearing impairment. Parents were able to understand and communicate to their child through sign language. When given a 10 training sessions spaced within 5 days, the parents have fully mastered their skills in signing the alphabets, numbers, colors, nouns, verbs, pronouns, adjectives, greetings, school related words and different kinds of emotions. With the help of sign language training, parents were able to have frequent communication with their child with hearing impairment, family relationships became stronger because there are no communication barrier that hinder them from understanding each other, children with hearing impairment are being accepted as part of the family, the needs of children are catered by their parents because they can now interact efficiently with their children with hearing impairment and vice versa. Sign language training is an effective strategy in helping parents understand their children with hearing impairment. The improvement in the communication skills bridges the gap between the parents and their child with hearing impairment.