This is a case report of the application of MET in the treatment of throat itching and cough. The most prominent feature of this case is that the symbolic object was alive, and the inactivation of the symbolic object had played a significant role in achieving prominent curative effect. The day before the consultation, the client felt a cold and had symptoms such as throat itching and cough. The target symptom of this MET consultation was itchy throat. The symbolic object was a caterpillar. The symbolic carrier was a bento box. After the inactivation of the caterpillar, the symptoms were significantly improved. The client coughed from time to time before inactivation and never coughed again after inactivation. Moved to 1000 meters to enter the psychological empty land. The degree of influence was reduced from 6 points to 0.5 points, achieving remarkable effect. The next day, the client reported that the cough did not recur. This paper presents the operation process of this case in detail. And also, in those similar cases with active symbolic objects, the features of the symbolic objects and how to carry out the corresponding inactivation operation were summarized and analyzed with personal experience.