This study attempts to suggest a theoretical basic frame that is needed for nursing intervention regarding the sexual experiences of the mentally disabled. The data were collected through a series of interviews with 14 participants. With permission of the mentally disabled, the interviews were recorded and transcribed. The data were analyzed using the framework of grounded theory mapped out by Strauss & Corbin(1998). The following 3 theories were confirmed on the basis of repetitive relations: becoming nest type, exercising self-restraint type, getting tangled type. Therefore, it is necessary to develop a realistic sex education that is relevant to hospital, community mental health center, and culture. The nurse is required to activily participate in educating the mentally disabled with a diverse approach to instill and nurture the sober perspective about sex such as the pleasure, life, intimacy based on sexual equality.