Poland is country with a preserved and rich biodiversity. It is important to maintain, keep and enrich this biodiversity as a part of actions of agriculture. The plant protection, and especially chemical method are frequently treated as the biggest threat from the part of the agricultural production for the environment and biodiversity. Activities under taken in the past years have changed a lot. But still plant protection products are used to kill the insects, diseases and weeds means part of biodiversity. On the other hand plant protection products allow us to maximize agricultural productivity and ensure food supply. Farmers are required to increase the yield and at the same time protect nature and biodiversity. In the article results of scientific research and Polish activity in protection of the biodiversity are presented.