The invention discloses a human physiological parameter acquisition effective value self-starting method and system. The method includes: connecting blood pressure, electrocardiogram and blood oxygen testers to a human body correctly, and starting to acquire human physiological parameter data in real time one by one; comparing the data to thresholds, if the data reach starting thresholds, transmitting acquired blood oxygen saturation values, blood pressure pulse waves, heart rate values, pulse rate values, electrocardiograms and blood pressure values reaching the thresholds and serving as effective values into an analysis system to be analyzed and outputting results. The system comprises a device which is connected with the blood pressure, electrocardiogram and blood oxygen testers connected to the human body and used for acquiring the human physiological parameters. By the method and the system, automatic turning-on is realized without intervention of specialist physicians, intelligent self-starting is realized, burden is reduced for medical staff, convenience is brought to patients, detection efficiency is improved, and diagnosis effect is improved as well.