I have throat pain since 1year. Please suggest me some medical care.?

Sinus or acid reflux. If just sore throat without weight loss or history of smoking/drinking i would not be concerned about cancer. If you have those symptoms with smoking/drinking history - i'd be concerned. This may be something as simple as acid reflux. Over the counter antacids taken daily can help. It could be allergy or sinus drainage and nasal sprays/antihistamines can help with that. Either way, get it checked.