Here, we present a protocol to induce H-type hypertension and evaluate the antihypertensive effects of Huotan Jiedu Tongluo decoction (HTJDTLD) administered intragastrically. In rats with H-type hypertension, HTJDTLD had effective antihypertensive effects, possibly associated with inhibition of endoplasmic reticulum (ER) stress-induced apoptosis pathway activation.