
With the help of advanced science and technology, Modern medicine has open a new era. It has dramatically changed of the countless people life. But discovery of a drug is a complex process which faces scientific, technical and regulatory challenges. In spite of such challenges, every day, many scientists in the biopharmaceutical industry research at the molecular level, screen and make a new disease target and trails at animals and human to get a desired result. This result help to fine new drug or medicine that will help to improve medical care. Researchers are working to search a more effective way of drug discovery and development process that’s lead to maintain highest safety and efficacy standards. This paper is a survey report on the hierarchical step of drug discovery and development process.