In India, about 65% of people are involved in agriculture and farming. Indian farmers face a lot of difficulties in agriculture, one of the major problems they face is a failure of crops due to pests and insects. Insects are responsible for the destruction of crops and to prevent them we use pesticides and insecticides. Insecticides/pesticides are sprayed on crops using devices known as the pesticide’s sprayer. There are many types of sprayers used by farmers, most commonly used sprayer is backpack sprayer. It has many limitations like low pesticides carrying capacity, inefficient spraying, prolong use of backpack sprayer will lead to back problems of the person using it. The main aim of our project is to do fabricate mechanical pest sprayer, which can overcome the limitations of a backpack sprayer. We have designed a model running without any fuel and it is easy to operate.