i used to watch this about 10-15 years ago.
this anime, it's about a santa claus in his childhood. He has many adventure and has battle with the evil who wears the scary mask.
I don't remember well but i think in the end, he goes and stay with Elf.
but i remember its ending theme very well, it's the most wonderful song i ever heard, but i don't know this song's name.

If you know this anime please tell me its name or its song's name.
Thank you very much

That's "The great adventures of Young Santa Claus".

http://anidb.info/a4053

OP: "いつも心に太陽を (Itsumo Kokoro ni Taiyou wo)" by Takako Okamura
ED: "愛という名の翼 (Ai to iu Na no Tsubasa)" by Takako Okamura


*M strikes again*

wow thank you very much.
i search for it for a long long time.
but do u know the song i'm meant?

I'm certain about the anime's title, but I'm not certain if the opening and closing songs are what you are after.

thank you very for your detail.