This paper presents the measurement results of gross β activities in fallout samples collected from the en- vironment around Qinshan Nuclear Power Plant (NPP) during 1993-2002. The gross β activity of 191 samples col- lected at five monitoring spots were (0.11～3.64) Bq·m-2·d-1, with an average of (0.91±0.49) Bq·m-2·d-1. This value was lower than (1.02±0.35) Bq?m-2?d-1 , the average of the samples collected at the reference spot in Hangzhou. It indicated that no obvious rise in the gross β activity level of fallout was observed in ambience of Qinshan NPP.
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