The investigations of Chl.a and primary production in coastal upwelling area (27° 30\´-30° 30\´N, west to 124° 00\´E) off Zhejiang in Aug.and Oct. 1981 were carried out. The high value areas of Chl.a were in nearshore and on top of the upwelling front where occured the maximum 7.40 mg/m
3. The average primary production was 1.25 g C/m
2.d. It was in excess of 2.0 g C/m
2.d in centeral area of the upwelling. Whole surveyed area\´s output was about

tons C/day.