Abstract: Based on the 32 open-pollinated families in the second-generation seed orchard of Cunninghamia lanceolata "Chen-shan Red Heartwood",investigations were made on the growth traits of half-sib progeny in Hongya Forest Farm of Sichuan Province. The results indicated that the average seedling height and variation coefficient were 14.08 cm and 17.58%, respectively. The average ground diameter and variation coefficient were 3.10 mm and 16.65%, respectively. And there existed significant differences in seedling height and ground diameter among different families. The family heritability of seedling height and ground diameter was 0.866 and 0.889, indicating the great family heritability control for growth traits. 3 excellent families were selected on the basis of comprehensive assessment. The average tree height was 16.31 cm,the genetic gain was 13.72%, and the average ground diameter was 3.49 mm,and the average genetic gain was 11.18%. The selected excellent families could be reserved for further test and assessment.