With the large-scale construction of the 5G mobile communication and rapid increase of 5G users, the problems faced by 5G network planning and construction are becoming more and more prominent. Traditional wireless network planning mainly relies on manual selection, which leads to coverage target deviation and waste of investment. A big data scoring system is proposed based on geographic data, network operation data, resource situation, business forecasting, which contains four levels and twenty dimen- sions. Focusing on network problems and valuable users through big data scoring, accurate 5G network planning is realized.