This paper presents a preliminary analysis on the dynamics and characters of in-dividual fecundity of Trichiurus haumela, based upon the study of 354 ovary samplesof the fish collected off East China Sea ain 1963-1964. Among the specimens measured the number of visible eggs of each individualTrichiurus haumela, in the East China Sea, ranges from 12.8-330. 9(×1,000), ge-nerally 30-50 (×1,000). The number of eggs spawned by each anal length group is33% of the number of visible eggs in that group. The number of visible eggs increaseswith body weight, anal length and age; among these three growth indices, body weightis the most important, followed by the anal length and the least being the age. The number of visible eggs of individual per aual length unit (r/l) ranges from50-650, that of per body weight unit (r/q) ranges from 52-261, generally 90-160.The relation of body weight and anal length with the number of visible eggs approa-ches a wavy curve line indicating that the variability is rather stable. This paper brings out the problem of the relation between individual fecundityand growth index. The problem of biological characteristics reflected in individualfecundity in population is also discussed.