The research offered by the author had been conducted in the sphere of comparative law on the issues of family law. The author makes several suggestions in the article with regard to the ways how Russian legislation can be improved and updated.Laws of different countries mention person’s health (physical and psychic) as a prerequisite for marriage. But there are differences in the laws of Russia and foreign countries in respect of this question and the author dwells on this question in the article.The health of both partners in the couple plays an essential role in the matrimonial relations especially it is important for the birth of the common children. That is why this issue requires attention of the lawyers and jurists. The author states that before getting married in most countries it is required for a couple to have a blood test for venereal and other diseases.Some countries also require a physical examination. Thus these tests help the partners become aware of any medical problems of each other that may affect their marriage.In the conclusion the author states that in Russia medical test is a only a right for a couple which is rarely realized. Taking into account the importance of this issue the author of this article considers that this rule should become obligatory and that medical tests are to be the duty of a couple which wants to get married.