Harmony is living together with other people based on a sense of affection and love, and humans cannot live side by side unless there is an understanding between them and a desire to live together and to maintain a sense of harmony and compassion. Harmony between religious communities means living in an atmosphere of peace, even though different religions, or being in a state of harmony, calm and serenity, without disputes and conflicts, united in the intention of helping each other. The picture of religious harmony (Islam and Christianity) in social life created in Segaran Village, Wates Regency, Kediri Regency, there has never been a dispute that has resulted in physical fights between them. In fact they always live side by side, in harmony and peace. This study aims to reveal and explain the factors of religious harmony between Muslims and Christians in Segaran Village, Wates Regency, Kediri Regency. Researchers used qualitative methods by taking data through interviews, observations, and documentation method. The researcher uses a sociological method to make it easier to see the factors of harmony in Segaran Village, Wates Regency, Kediri Regency. The researcher also uses the inductive method to draw conclusions from the facts obtained in this study. As for this discussion, the researchers found that religious harmony in Segaran Village, Wates Regency, Kediri Regency can be harmoniously, safely and peacefully interwoven because of several factors: the dzohiriyah factor which consists of: social environment, family, mu'amalah. The inner factors consist of: mutual respect, understanding of religion, a sense of calm and serenity in the heart. In addition, this harmony forms a sense of respect, helping each other during religious holidays (Eid al-Adha, Eid al-Fitr, Christmas), helping each other in society and helping when someone dies. Because harmony and peace can affect individual lives, including: purifying oneself, cleaning the heart, the emergence of obedience to Allah, doing good and group life including: feeling useful after contemplating in society, increasing knowledge in society, increasing ukhuwah. Therefore, the factors, influences and forms of religious harmony in Segaran Village, Wates Regency, Kediri Regency have an effect on social life whose residents are of different religions.v Finally, this research that is still very global, researchers see that this paper is still far from perfect, especially in the study of Religious Harmony in Segaran Village, Wates Regency, Kediri Regency. So that researchers hope for corrections and input from readers so that this research can achieve better goals and results. And can be developed by further researchers.