蔡楚生的广播剧《第七个“九一八”》是新发现的一个三幕抗日剧。从中国广播剧文学史来说,这个作品具有里程碑式的意义。首先,它对当时中国的社会现实进行了全景式表现,全面反映了中国各阶层民众不同的精神状态,改变了以往的广播剧只描写一个生活片段的格局。其次,正面塑造了一批为国牺牲的抗日将士和抗日民众的英雄群像,这是以往的广播剧从未有过的,具有突破性意义。第三,突出了广播剧的文体特征,也具有标志性的意义。 Tsai Chusheng’s radio drama “Seventh ” Nine One Eight “” is a newly discovered three anti-Japanese drama. From the history of radio drama literature in China, this work is of landmark significance. First of all, it carried out a panoramic view of the social reality of China at that time, fully reflecting the different mental states of people in all walks of life in China and changing the pattern of describing only a fragment of life in previous radio dramas. Second, it has positively shaped a group of heroes who sacrificed their lives for the country and the anti-Japanese people. This is unprecedented in radio drama and has a breakthrough significance. Third, highlighting the stylistic features of radio dramas, also has landmark significance.