A method and device for fetal electrocardiogram separation. The method for fetal electrocardiogram separation comprises: using an R-wave peak position in a received maternal abdominal wall electrocardiogram signal as a central positioning point, intercepting a certain length of an electrocardiogram signal fragment (S101) linearly averaging an electrocardiogram signal fragment corresponding to a current electrocardiogram cycle and previous M-1 consecutive electrocardiogram signal fragments so as to generate an average template (S102) performing dynamic amplitude correction on a maternal QRS wave group in the average template according to a relevance between the maternal QRS wave group in the average template and a maternal QRS wave group corresponding to the current electrocardiogram cycle, thus generating a maternal abdominal wall electrocardiogram estimation signal (S103) and offsetting a maternal electrocardiogram component in the maternal abdominal wall electrocardiogram signal according to the maternal abdominal wall electrocardiogram estimation signal so as to obtain a fetal electrocardiogram component (S104). The method and device for fetal electrocardiogram separation may perform two-stage template correction, having a simple algorithm, and only one maternal abdominal wall electrocardiogram signal is needed, so that single lead fetal electrocardiogram signal separation may be completed.Linvention concerne un procédé dextraction dun signal dun électrocardiogramme fœtal et dispositif associé. Le procédé dextraction dun signal dun électrocardiogramme fœtal consiste à : intercepter le segment dun signal dun électrocardiogramme à longueur donde déterminée avec un point culminant de londe R tenant lieu de point de détermination central se trouvant dans le signal reçu en provenance dun électrocardiogramme de labdomen de la mère (S101) produire un modèle moyen linéaire avec segment dun signal dun électrocardiogramme correspondant au cycle de lélectrocardiogramme cour
