An experimental examination is conducted to study the effect of rice husk ash (RHA), cement clink dust and calcium chloride (CaCl2) on the black cotton soil to check the stabilization based on engineering property of the black cotton soil. The engineering property of stabilization soil such as moisture content, specific gravity, liquid limit, plastic limit, OMC & MDD and CBR value of the soaked and unsoaked sample is evaluated. The different percentage of RHA is mixed in natural soil in 5%, 10%, 15%, and 20% and all the test can be performed and determine the all test value and CBR value, it was observed that the maximum CBR value is obtained in 15% RHA is mixed in the soil. After that two more-admixture cement clink dust and calcium chloride are the mix in 20% and 2% respectively and perform the experiment and determine CBR value. After calculating all the value, it is seen the maximum CBR value is obtained when 15% RHA, 20% CKD and 2% cacl2 is mix in the soil. The value of liquid limit and plastic limit in given sample is 35.57 and 26.07 respectively. It is seen that the CBR value increases the new CBR value of this sample in 2.5 mm penetration in soaked and unsoaked soil is 5.77 and 7.58 respectively, and CBR value in 5mm penetration in soaked and unsoaked soil 6.98 and 8.18 respectively. The new CBR value is 2.5mm penetration in soaked and unsoaked soil is 128.97% and 44.15% increase.