This paper, aiming at the sustainable development, uses the eco-footprint model to calculate the eco-footprint during 1985—2005 in Yibin city, and analyzes the eco-footprint safety, with results indicating a big dynamic change in per capital eco-footprint, increasing trend in general, decreasing trend in per capital eco-loads with asymmetric structure (chiefly, plowlands). The per capital eco-deficit fluctuated largely, emerging since 1985, to some extent, becoming severe in 2005. The eco-footprint pressure index displays an increasing trend from 1985 to 2005. The ecological safety becomes continuously decreasing, undergoing safe, less safe, unsafe, and very unsafe stages. Human’s living and production has a bigger and bigger impact over eco-footprint safety. The land demands and supply will become sharp in the future in Yibin city.