The aim of the study is to investigate condition and reproductive activity of Donggala cattles during post-puberty and post-partom periods. The study was carried out for 12 months at Donggala, Palu and Sigi Districts where major populations of Donggala cattles were kept by farmers. A total of 200 heads of Donggala cattles belonged to the local farmers were sampled. The animals were categorized as heifers when they were 10-18 months old and cows at 18-24 months old. Data colected inthis study were from structured interview and direct observation. Variables measured were body condition score, live body weight, age of puberty, age of first estrus and first mating, days open, service per conception rate, non return rate and conception rate either during post puberty or post partum. Data found in this study were describe descriptively. The results of the study indicated that the age of puberty was late as live body weight body condition score of Donggala were low. First mating of Donngala heifers was much dependant upon live body weight. Heavier cattles tended to mat earlier than the lighter cattles. Heavier catlles had better service per conception rate, non return rate and conception rate either at post puberty or post partum periods. In conclusion, the cows with high body weight had earlier first estrus, first mating and better service per conception rate, non return rate and conception rate than those cows with low live body weight.