The objectives of this study were to investigate (i) The knowledge and wisdom of treatment with a blue spirit medium and (ii) The learning methods for treating patients with the wisdom of MoLam Phee Fa. The study was conducted by analyzing documents and collecting field data by surveys, interviews, observations, and group discussions. The results of the descriptive analysis of the data collected from a group of 40 participants indicated that: (i) Belief in Phee Fa Phaya Thaen is considered to be an ancient religion that exists in southern China along the Mekong River Basin. People who respect it believe that Phaya Thaen will bring prosperity as well as help in times of illness. This knowledge has continuously been passed on by learning the steps in ceremonies to help cure the sick. (ii) MoLam Phee Fa is a group of people who have inherited the knowledge of black magic healing by inviting the Phee Fa spirit into a medium to predict the cause of the illness of those who come for treatment. Those who come to receive the knowledge transfer will strictly adhere to the rules. Disciples must learn the skills while treating patients and memorize the literature used, including memorizing the contents of the poems and melodies and using the principles of psychiatry to empower patients to have the strength to live their lives. In conclusion, MoLam Phee Fa are in possession of a method for curing patients using magical methods that relies on building morale. This wisdom, therefore, deserves to be learned and passed on as an alternative treatment.