The present invention relates to an armband-free blood pressure measurement system. The blood pressure measurement system is mainly configured to detect an electrocardiographic signal of a person under test through an ECG detection module, and measure a body impedance signal of the person under test through a wearable blood pressure measurement module worn around the limb of the person under test. The obtained information is subject to a waveform comparison to find a time difference between the heart beat and the blood flow pulse of the person under test, so as to determine a pulse transmission time, thereby generating blood pressure information of the person under test.本發明有關於一種無臂帶之血壓測量系統，其主要係透過一心電圖偵測模組來偵測受測者的心電描繪訊號，再透過配戴環繞於受測者肢體上的一配戴式血壓測量模組來測量受測者的體阻抗訊號，並將取得資訊進行波行比對，以找出受測者心搏與血流脈波的時間差，以得出脈波傳遞時間，進而產生受測者的血壓資訊。
