If i do not eat fatty food, why is my triglycerides level high???
There are a number of different possibilities, but the most likely is malnutrition. Many people disrupt their fat-storage processes by starving themselves, because they think that this will improve their health.
The idea that eating less, or less fat, must be good for your body IS A MYTH.
If you eat very little fat, your body will be desperate to store whatever fat is available. Triglyceride is the 'storage' form of fat (three 'fat chains' joined together by a 'glycerol group'), and it can't be burned as fuel because the glycerol acts like a 'fire retardent'.
The Triglycerides can't be stored, because your body wants to use the fat as fuel for activity. But the fat can't be released, because not enough energy is available to power the process.
Eating more fats (and probably eating more generally) will allow your body to fuel more activity. GENTLE activity (movements that don't need conscious 'effort') burns fat as fuel.
If you are getting enough fuel from your diet, you will be able to store the triglycerides in fat ('adipose') cells, where they are harmless. This process won't make you fat, IF you are active enough at the same time.
(Healthy fat cells are always storing and releasing fat at the same time; activity helps to make them release more, and store less.)
Restricting your diet makes it very difficult to be active enough for good health. Eating the right amount of nutritious food (ALL food groups are necessary) will enable your body to handle its nutrient and fuel needs much better.