In the last time the driven pile and bored pile foundation are widely used in Cambodia. And for calculation the bearing capacity of bored pile foundation we have a lot of equations to resolve it by using soil parameters from laboratory test and in-situ test such as static cone penetration test, dynamic cone penetration test, pressiometer test and standard penetration SPT.The problem for us is the inability to take undisturbed sample like the sandy soil at the greater depth, so the capacity of our laboratory can not provide sufficien soil data for calculating the bearing capacity of pile foundation. So we need equation and safety factor suitable for the sub-soil condition in Cambodia by using index SPT and verifying the bearing capacity of bored pile and driven pile foundation we need static pile load test. The research was done in the construction of the Ministry of Land and Management of Cambodia for bored pile and in Sport City, street No211, SangkatVealvong, Khan 7 Makara, Phnom Penh city for driven pile.