Abstract: This paper conducts research on the LCOE of PV power generation projects,introduces its related concepts,and analyzes its various influencing factors,targeted proposes relevant methods and suggestions to reduce LCOE. The research results show that:1) In the current market situation,among the three components of LCOE in PV power generation projects,LCOE of the initial investment part accounts for the largest proportion,reaching 72%～76%. 2) Power generation capacity is a very sensitive influencing factor for project LCOE,and it is necessary to seek areas with better solar resource conditions to build PV power generation projects. Reducing the curtailment rate and increasing the amount of electricity connected to the grid can help reduce project LCOE.3) The discount rate has a significant impact on the project LCOE,but it is not related to the project itself and mainly depends on the industry’s benchmark rate of return and the expected rate of return set by project investors.4) The annual attenuation rate and operation and maintenance costs of PV power generation systems have little impact on project LCOE. 5) Finding loans with low financing rates can to some extent reduce project LCOE. 6)Reducing initial investment and increasing power generation capacity are the two main ways to reduce the project LCOE,and they are also the two directions that PV workers need to strive for the most. In the hope that this study results can provide reference for the development of PV power generation technology and the construction of PV power generation projects.