The present study utilized 1195 records from 702 ewes of Awassi sheep progenies of 111 sires and 451 dams bred in the drylands at Al-Fjaj station, Jordan. The aim of this study was to estimate genetic parameters as well as to investigate non-genetic factors affecting milk yield (MK) and litter size at birth (LZB) using SAS and MTDFREML programs. Average of MK and LZB were 92.84 (kg) and 1.16, respectively. MK was high significantly (P<0.01) affected by parity, age of ewe, year of lambing, and lactation period, while only the year of lambing had a significant (P<0.05) effect on LZB. The heritability and repeatability were 0.07 and 0.10 for MK, while they were 0.05 and 0.25 for LZB. Genetic and phenotypic correlations between MK and LZB were 0.17 and 0.02, respectively. The research concluded that the herd is genetically homozygous and therefore there are a need to increase genetic variance by introducing improved rams and selected females.