[s]PurposesTo analyze the correlation between the M-mode spectrum of pulmonary valve and the estimation of pulmonary hypertension based on the tricuspid orifice regurgitation beam pressure difference.MethodsFifty patients with pulmonary hypertension and 50 healthy persons admitted to our hospital from December 2016 to February 2018 were selected as the research objects. The correlation between the M-mode spectrum of pulmonary valve and the pressure difference scanning of tricuspid orifice regurgitation beam was analyzed.Results The pulmonary artery diameter, right atrial diameter and ACTpv in patients with pulmonary hypertension were significantly higher than those in healthy control group (P<0.05); PAWPA in patients with pulmonary hypertension was significantly lower than that in healthy control group (P<0.05), and there were significant differences in M-type spectrum between patients with pulmonary hypertension and healthy people; there was a significant positive correlation between M-type spectrum of pulmonary valve and ACTpv (P<0.05). There was a significant negative correlation with PASP (P<0.05).Conclusions There was a significant positive correlation between the M-type spectrum of pulmonary valve and ACTpv of tricuspid regurgitation beam pressure difference, and a significant negative correlation with PASP.