The new coal-fired power plant project in Bangladesh is located in marine sedimentary strata， and bored piles are used for the pile foundation. In order to solve the construction problems brought about by the new construction conditions in Bangladesh， the construction was carried out according to the construction standards of China， and rotary drilling bored piles with post grouting were adopted to eliminate the influence of drilling settlements and mud cake around the piles on the bearing capacity of foundation piles； thus improving the bearing capacity of foundation piles. The test results showed that the piles met the Class I standard. Through the successful application of post grouting technology in this project， the field operation control measures are summarized， which can provide reference for bored pile post grouting construction technology in “the Belt and Road” countries.