Deforestation means cutting down trees in large number. The causes of deforestation are many. Bangladesh is one of the most densely-populated countries in the world. Her population is much more in proportion to its area. This huge number of population needs more food, shelter, agricultural land, fuel, furniture, medicine etc. People cut trees for various purposes. Most of the villagers cut down trees to use them as fuel. Some of them use trees as wood, wooden furniture and some sell trees for getting quick profit. There are some dishonest people who cut trees in the forests to make money. The effects of deforestation are too many to describe. This destruction disturbs our ecological balance. The existence of wildlife is going to be threatened. Due to deforestation carbon dioxide is increasing worldwide. As a result, the world is becoming warmer. The sea level is rising and many parts of the world are going to be engulfed by the sea in near future. On the other hand, new areas of the world are Turning into deserts as a result of deforestation. It also causes serious damage to the soil, as Trees give protection to soil as well. Aftermaths, the soil gets sediment in the riverbed and causes frequent floods. So, if we destroy trees at random, one day the country may turn into a great desert. All living animals and birds will not find any food or shelter to live in. The temperature will rise and it will cause greenhouse effect. The country will be unsuitable for living and various natural calamities like flood, drought, storm, earthquake etc. will occur in our country. Immediate measures should be taken to combat deforestation. People should be made aware of tree plantation through mass media. In addition, tree plantation program should be extended throughout the country to make our country evergreen, fruitful and prosperous.