Last day i cut some vegetalbes which were hard enough. suddenly i got swelling in my palm thereafter i have itching in my feet as well as palm?

Allergy?: Sounds possibly to be an allergic reaction, although exactly to what may be difficult to know. It could be the vegetables themselves, to a chemical that may have been on them like an insecticide, a reaction to some material in the tool you were using, possibly to the handle. If not severe, you can consider taking an antihistamine, otherwise you should see your doctor for evaluation.

Skin reaction: This "sounds" like an allegic skin reaction and generalized allergic symtoms. I advise seeking medical attention. You can take over the counter Benadryl (diphenhydramine) now and use over the counter 1% Hydrocortisone cream ( thin layer) on palms and feet. Avoid offending vegetables until seen..