This study was conducted to investigate influencing factors that help students to improve their speaking skill at English Education Department of Universitas Muhammadiyah Yogyakarta (EED of UMY). In this study, the researcher used qualitative research as research design. The participants were four male students EED of UMY batch 2013. The reasons why the researcher takes these research subjects are mentioned as follows. First, research subjects have been practicing speaking skill for four years. Second, research subjects experienced in solving speaking problems. In collecting data, the researcher used standardized open-ended interviews. The reason is because standardized open-ended interviews are flexible to do. The researcher analyzed the data using transcripts, member checking and coding. The findings about influencing factors that help students to improve their speaking skill at EED of UMY were language input, language output and psychology. In language input, the researcher found teacher (input and pronunciation), interlocutor (fluency by speaking English to foreigners), printed materials (grammar and vocabulary from magazine, newspaper, textbook, novel, education book and research book), audio materials (vocabulary and correct pronunciation from music) and audio visual materials (pronunciation from computer, television, television broadcasting, youtube, education content, news, documentary, film and video). In language output, it consists of environment. In environment, there are English forum (speaking club, debate, speech, presentation and group work) and friends (practicing speaking English with friend at dormitory). In psychology, the researcher found confidence (enjoying speaking English, speaking English with foreigners and making sure himself to speak English to foreigners directly) and motivation (self-motivation and being motivated to speak English because of : speaking in daily life, friend’s better speaking skill, English teacher as role model, speaking English to everybody, imitating English native speakers speaking English in youtube, imitating singing English song and also practicing speaking skill in front of mirror).