Abstract: The current "Suggestions" or requirements regarding specific exercise intensity (average heart rate) of the relevant documents and practices of physical education curriculum teaching are largely based on health (and physical fitness) assumption and effect.Aimed at the problems and difficulties about specific exercise intensity and the health pursuit of school physical education and using textual research logical, reasoning and value analysis, the different logics and orientations between specific exercise intensity and the pursuit of health as well as physical education teaching were clarified.It holds that:① The given exercise intensity can not meet the health pursuit of school physical education.There exist one-sidedness and dislocation in the introduction of the intensity of fitness or physical activity into school physical education (mainly physical education curriculum teaching).The implied defect may appear in average heart rate requirements, its low and high intensity may violate the "health" assumption of the medium-to-high intensity.The heart rate intensity is not directly and necessarily related to physical fitness improvement, but more of a reference index for endurance development.② The given exercise intensity is not compatible with the essence and regulation of physical education teaching.That is, under the regulation of average (medium and high) intensity, the compensation of high intensity to low intensity is limited and unreasonable, which makes the low-intensity teaching process, specific situations, low-intensity events in unit period and moral education in physical education excluded or ignored.It is provided that the "Suggestions"or requirements of specific exercise intensity in the relevant documents and practices are misreading and misusing of high intensity theory in fitness, and the specific exercise intensity is not necessary for the development of physical strength, technical ability and sports morality, it should not be regarded as the unified requirement of physical education curriculum teaching, and the application of exercise intensity in physical education curriculum teaching should go beyond the assumption and limitation of health, including the re-examination and re-positioning of " health first".