Which exam GATE and IES will be better for B.Tech ECE students??? Please solve my problem……..

I would suggest you to opt GATE, as you are a B.Tech ECE students it will provide you many options. GATE would be better for you, Because after you will get admission in M.Tec in some of the IITs, then you can go for P.hd or you can do job.

With valid GATE score you can get admission in following top institutes:

Indian Institute of Science Bangalore
Indian Institute of Technology Bombay
Indian Institute of Technology Delhi
Indian Institute of Technology Guwahati
Indian Institute of Technology Kanpur
Indian Institute of Technology Kharagpur
Indian Institute of Technology Madras
Indian Institute of Technology Roorke

With good GATE scores you can get job in following top companies too:

ECIL
NFC
DRDO
NSIC
HAL
But if you are interested in government job then you must prepare for IES exam. Its not easy to clear this exam you need to study very hard to compete.