Abstract: Ten large fruit strains of Actinidia chinensis var.chinensis were found to be tetraploid.Mean fruit weights are from 71 g to 100 g.Fruit shapes are spheroidal .ovoid, ellipsoid,or turbinate.Habitat altitutes are from 560 m to 1035 m.The relationship between fruit size and polyploidy as well as the genetic breeding value of the tetraploidstrains were discussed.