This paper aims to investigate for an evidence of fertility decline reversal in Sudan through analyzing fertility levels and trends and to examine the fertility decline reversal by identifying factors associated with fertility. Primary and secondary sources of data were used. Demographic and Health Survey 1989 (SDHS 1989) and Safe Motherhood Survey 1999 (SMS 1999) reports were the secondary sources while the raw data of Sudan Multiple Indicator Cluster Survey 2014 (MICS 2014) constitutes the primary source. Multiple regression technique has been applied to estimate factors associated with fertility in 2014. Results revealed that the fertility of women increased by 13% during 1993-2014 after it has been declined by 24% between year 1979 and 1993. The group with the largest contribution to fertility increase is 15-19 women years old; which is 70.6%. The statistical analysis results indicated that early age at first marriage before 18 years old and women education were important factors associated with the fertility decline reversal, where one-year increase in the variable of age at first marriage less than 18 represents an increase in fertility by 0.724 and none educated women and those with primary education level increase fertility by 2.417and 1.468 respectively.