When the amygdala continues to sound like an out-of-control alarm, and when cortisol stirs up a storm in the blood, anxiety has become a dual dilemma for modern people both physically and psychologically. This work uses neuroscience as a key to dissect the physiological basis and cognitive traps of anxiety, from the overactivation of the amygdala to the regulatory failure of the prefrontal lobe, from the memory encoding of childhood trauma to the vicious cycle of adult stress, and constructs a complete path from pathological understanding to practical breakthroughs. You will find that anxiety is not only an emotional distress, but also a survival signal sent by the body and brain, and the solution lies in the interaction between neural mechanisms and behavioral patterns.