Take Hainan high-quality dried areca as the material, ultrasonic enzyme softening technology are used in areca fiber, single factor and L9(34) orthogonal experiments are conducted to evaluate the effect of enzyme addition amount, ultrasonic power, processing time and processing temperature on chewiness, slagging and hardness of comprehensive scoring on areca. The optimum condition are as follows: the enzyme addition amount of 0.4%, the ultrasonic power of 560 W, the processing time of 32 h and the processing temperature of 45 ℃, and the che...