This study may be regarded as a survey of Razi`s works including Alhavi fi `t-Tib, Almansuri fi `t-Tibb and Akhlaq ut-Tabib. At first, instructions and recommendations of medical morality were classified in three fields: a. physician`s characteristical properties, b. master and pupil`s interactions, c. physician and patient`s interactions. Razi`s moral recommendations and instructions in the field of physician and patient`s are founded upon reliance on God, making profit, lack of damage, trustworthyness, kindness and justice. These are important principles of medical moral. These six principles may be preferred to those current in the West. Razi`s moral principles not only include three principles of the four current in the west but include three principles not current in the West also; they lie in reliance on God, trustworthyness and kindness.