Due to massive spread of the covid-19, the world is facing complete lockdown. In each and every part of the world transport, factory, industry, businesses are on shutdown. There are no vehicles running on roads, no trains on tracks, and a large population taking rest in their homes during this lockdown. Due to this lock down there are many negative and positive things happening in and around the world. This paper is about the negative and positive impact of covid-19 on environment. There are many changes in our environment due to this covid-19. The major pollutant of the air such as PM 2.5 and pm 10 has decreased in major cities of the world. There are sharp decrease in the level of carbon dioxide, carbon monoxide, Sulphur and many such gases in the atmosphere. The visibility of the landscape has improved and the polluted cities like Delhi have got fresh air quality in these days. Rivers which is polluted throughout the year has got cleaned and rejuvenated with fresh water. The dolphins in Ganga jumps throughout the river as there is no fisherman, boats, streams in the river. You can see the Himalayas from the cities like Jalandhar, Chandigarh and Sitamarhi. Earlier it was not possible for a person to watch the Himalayas due to pollution in the atmosphere. This happens due to reduced pollution level in the atmosphere. The scenes of stars and planet are very much pleasing for the people. The sky is looking beautiful these days. The birds are not facing interference in their migration and they are living happily in the environment. Here, we conclude from above that the environment rejuvenated itself from the lockdown period. Each and every organism living in the atmosphere has got a new life in this Crisis period.