In view of the prominent problems in the field of project tendering and bidding, Kunming has made many new explorations in the project tendering and bidding supervision in recent years. The present situation of tendering and bidding supervision of Kunming is described from four perspectives: the tendering and bidding regulatory institutions, the supervision before tendering and bidding, the supervision in tendering and bidding and the supervision after tendering and bidding. Some new trends in the field of project tendering and bidding supervision are considered and some suggestions are put forward to strengthen the tendering and bidding supervision. New technologies provide new tools for tendering and bidding supervision, and it is necessary to further explore the application of new technologies in the field of tendering and bidding supervision.