This study focuses on the soft soil stabilization using different combination of fly ash and cement admixture. The fly ash proportion varies from 10%, 15%, and 20% while keeping the proportion of cement constant at 10%. CBR test result is used as the soil improvement parameter with curing time for seven days. Test results indicate an increase of CBR with increase of fly ash and cement admixture to soft soil. The maximum CBR is at fly ash 20% and cement 10% with 49.36%. The swelling value of soft soil decreased with increase of fly ash and cement admixtures percentage. The swelling potential can be reduced to be less than 5%.