As for the livestock-poultry’s environmental system’s typical feature, a systematic warning approach for the livestock-poultry’s environmental system is proposed on the basis of cusp catastrophe theory. Livestock-poultry’s environmental system’s potential function is taken as state function, potential function’s equation is established and a cusp catastrophe warning model is constructed in order to ensure the discriminate of cusp catastrophe. The carrying capacity of livestock-poultry’s environmental system is taken as warning instance indexes and pollution emission relative intensity and the number of poultry feeding are taken as alarm aura, then V-level warning for livestock-poultry’s environmental system is carried out. Combined with example analysis, the result shows that based on the cusp catastrophe, the warning method of livestock-poultry’s environmental system’s precaution is available.