The article explores the use of digital models of hemodynamics to improve the health-saving competence of Physical Education teachers in postgraduate education through the integrative development of critical thinking and digital skills. The digital skills and critical thinking of a Physical Education teacher are relevant components of the 21st century skills system and are components of the health competence of a Physical Education teacher whose improvement is an important educational condition for the implementation of the sustainable development concept. The use of digital hemodynamic models, together with dialogical maieutics, reflexive and interactive educational practices, is an effective innovative educational technology that promotes the integrative development of digital skills, critical thinking, and the formation of fundamental and practically oriented morphology-based knowledge of cardiovascular system. Formed digital skills, critical thinking and knowledge of cardiovascular morphophysiology in Physical Education teacher is presented as a personal and intellectual condition for the prevention of sudden cardiac death of children and other cardiac pathology in the educational process during physical activity. The results of the study confirm the effectiveness of the use of digital models of hemodynamics to improve the health-saving competence of Physical Education teachers in postgraduate education through the integrative development of critical thinking and digital skills.