The main purpose of this paper is to propose standards of sexual ethics that people can agree with and health sexual attitudes and behavior that people can accept universally. In order to resolve the problems of the existing sexual ethics, we should understand clearly the limitations of the existing sexual ethics. This paper focuses on the standards of sexual ethics from the perspective of unification thought. We should search for a standard of sexual ethics and understand the correct meaning of human sexuality and the purposes of the human sexual organs in order to have healthy sexual behavior. The present points of view of sexual ethics focus on the values of childbirth, sexual pleasure, and love, stressing responsibility and respect to one’s sexual partners. From the perspective of the existing sexual ethics, if people have responsibility and respect for their sexual partners, homosexual, premarital and any other kind of sexual intercourse can be acceptable. However, even though these sexual ethics emphasize responsibility and respect to one’s sexual partners, sexual problems such as sexual disease and unwanted pregnancies have appeared in our society. Therefore, we should explore ways to have healthy and peaceful sexual lives, and we should propose an alternative for resolving sexual problems. This paper proposes new standards of sexual ethics in order to guide people’s steps in the path of righteousness. The proposed purposes to be recognized as universal values for the human sexual organs are to realize the completion of conjugal love, to create children, to preserve lineage, and to operate of conscience. Accordingly, the standard for sexual ethics is the accomplishment of the four purposes of the human sexual organs. In order to solve the various sexual problems in our society, human beings should search for the balance, harmony, and unity of the human character based upon the above standards for sexual ethics.