The progess in biological sciences and its applications in obstetrics in the last twenty years have formed the base for feto-placental semeiotics. In this way, it has been possible to diagnose placental insufficiency even in patients whose clinical conditions gave all the indications of a perfectly normal feto-placental condition. On the other hand, observations have shown that in certain conditions some deficiencies can im­ prove until normality is reached again. On the basis of the above one feels justified to talk about the therapy of feto-placental insufficiency. Until now this therapy has been aimed at the obstetrical pathology of the mother. Our aim is to illustrate the various steps which should be taken to execute an efficient therapy of the conditions relating to the pathology of the fetus, realizing full well that fetal pharmacology is only now being taken into consideration. The various steps to be taken, the length of therapy, and all the other correlated factors are still the object of individual ex­ periences, and we are fortunate to have amongst us researchers in this field who have accepted our invitation and can supply us with their personal experiences which can also be compared. The first international symposium on the therapy of feto-placental insufficiency has been organized in conjunction with the Samil-Pabyrn Foundation whom I would lik to thank, and especially so its president, Mrs. INGE SAXON-MILLS.