Abstract: With the increasing attention of countries in the world to seek green and low-carbon cycle development for energy system and continuous promotion of the national “One Belt And One Road” strategy,the number of overseas photovoltaic projects contracted by Chinese enterprises is increasing,and most of the project owners explicitly require the design units to adopt international general specifications such as American codes for bidding quotation.Based on an overseas photovoltaic bidding project,the same PV array foundation is designed by Chinese code and American code respectively,and the similarities and differences between the two codes for the design and calculation of micro cast-in-place pile are analyzed,and obtain the differences of pile foundation bidding quantities between the two codes.Finally,the design suggestions for such projects are put forward,in order to provide reference for overseas photovoltaic project designers.