Lead is a heavy metal and it is considered as a potent environment pollutant. It causes soil contamination and the, food, water and air as well. Lead causes adverse hazardous effects on life. Due to this act its of pollution it is regarded as a matter of urgent concerned, many studies have been carried out in this respect. However, there is still some thirst remained on insect part. Therefore, lead was studied in the form of lead acetate using different doses in mg at 48 hours post treatment, different concentration on larvae of Dipterous flies, developed abnormalities and malformation, respectively. Adverse effects on morphological and physiological characters were observed as a change in larval, pupal morphology and folded, elongated legs, curved wings of adults etc. Moreover, colour change of larvae, pupae and adult was also observed as a prominent feature.