My son he is 4 years old ever. 12 month he is having cold.

mommy, i think you need to build his immunity, as most kids have immunity issues till the age of about 5. my elder daughter used to have the same health issue but later once her immunity improved, things got better. i suggest you speak to the doctor and see what supplements you should add to his diet by means of natural foods. also, give him lots of warm foods when he has a cold.