Brecht,recognized as one of the most innovative playwrights of the 20th century,developed a new concept of narrative drama inspired by traditional Chinese opera,which had a profound impact on modern Chinese theater.This paper diverges from existing studies on Brechtian theater theories and texts,focusing instead on the"Couragemodell",a specific theatrical practice text related to Mother Courage and Her Children that was created during his exile.It examines the often overlooked rehearsal and theater performance materials compiled by Brecht and his assistants in 1949,supplemented by annotations,stage photos,and appendices.The paper specifically analyzes Brecht's meticulous handling and grasp of details within the"modell"as well as the resulting alienation effect.Furthermore,by combining the rehearsal records of the Berliner Ensemble's 1950s production of The Caucasian Chalk Circle the paper delves into Brecht's evaluation of Chinese theatrical mask details in theatrical practice and his creative use of masks.This analysis facilitates the understanding of Brecht's theatrical practice,highlighting its intricate relationship with and influence from Chinese theater.