From agricultural production、 agricultural ecology、 environmental protection and other angles, the writer analyses agricultural chemical、 agricultural film and chemical fertilizer, three big agricultural materials play a role and negative effect in agricultural production. The writer considers that agricultural chemical, chemical fertilizer and agricultural film can not be replaced in modern agricultural produetion. Within a long period, usage of these agricultural material products can not get off but its negative effect also not be ignore, especially influence on agricultural ecology environment, people shonld adopt all effectual measures and get ride off or reduce its unfavourable influence.