I often get burps...I get about 20 burps in a day nd I am unable to digest my food. Wat prob I can have?

Eructation. Burping may be a medical/gastrointestinal problem such as gastroparesis or other issue that a G.I. Doc could address. Psychologically, this could be a psychosomatic phenomenon, such as a compulsion. Social logically, this could be a culturally learned behavior. Any permutation of these areas are possible.
Aerophagia. Aerophagia (air swallowing) is a common problem that leads to frequent eructation (burping). The act of air swallowing is subconscious and people are usually unaware they are doing it. Discuss this possibility with your primary care provider.