Lin Yi-tsui, who has settled down in South Africa, was once a much anticipated poetess of the new generation. Her poems are few in number but high-quality, gentle but indomitable, and with many traces of the moon, but only few people researched on it. This paper aims to analyze 'moon' imagery of Lin Yi-Tsui's poetry from spiritual commitment and social care, the content includes image shaping, symbolic meanings, and differences between Lin Yi-Tsui's poetry and classical poetry. At last, this paper integrates characteristics of 'moon' imagery of Lin Yi-Tsui's poetry, probes the relevance to archetype and the applicability of archetypal criticism. 'Moon' as a common poetic imagery, Lin Yi-Tsui's poems follow some parts of patterns, but add modern consciousness, and develop her own individual style. The moon in Lin Yi-Tsui's poetry appears with a wide variety of faces, and shows unique and diversified values of poems.