Hi, I have 2 sugar gliders one is female and one is a male. I had the female one for two months and the male one about one month. They have no problems with each other until today.
So right now both of my sugar glider is in the sleeping pouch however my female one is not responding(curled in the sleeping pouch and its night) and my male sugar glider kept on licking her. When I tried to reach them the male sugar glider crabs at me and wanted to bite me, so i cant see whether my female sugar glider is alright.
at one point the male got so angry that he attacks the female one although he did not seem injure her but i got a limited view on her (since she's curling inside)
I'm really worried about my female sugar glider

can anyone please tell me why their behaviour suddenly turns like this??
is the female one dying? :(
what is the male doing?

The most likely consideration is that your female is in heat and the male is trying to mate, which would explain his licking and protectiveness over her. She may not be as interested in mating and is hiding in the pouch...or that's her preferred spot to mate for privacy.

If you think, which you do, that there may be any problem with your female's health, you need to be more bold with the male to remove him from the pouch so that you can check on your female. They are animals and you are in charge of them, not the other way around. If you're getting bit, use a glove...but, by all means check your female.

If she seems to be acting normally (not lethargic, weak, sneezing, hazy eyes, dehydrated) it may just be her heat cycle. But still keep an eye on her.

If she shows any signs of having symptoms...get her to your vet!

Thank you for replying.
You're right about the part that she's in heat
apparently their mating right now

Is your male neutered? You're going to have joey's in no time if not. You'll need to come back here for advice from the folks that have been through all aspects of joeys, from early death/rejection/cannibalism/hand raising/and what needs to happen once they are 8 weeks OOP and beyond.

I'm not sure if that sounds odd to you. Just in case...a neutered male will still try his best to mate although he is not sterile. My little Pip (neutered) was having a lot of fun the other night with one of my girls.

No he's not neutered..
i search through all the internet and posts here just in case,
i'm prepared about having joeys although i am a little bit nervous about the rejection's.

If you don't have lineage on them, they really should not be allowed to breed. It may sound totally remote that they could have any common ancestry, but it is very common! Gliders are shipped around all over the states. Also, not knowing their lineage can lead to unhealthy joeys not only from inbreeding, but from not knowing that there is a weakness in the blood line that will also cause health problems for the offspring. I'd suggest having him neutered, the sooner the better. You may already have joeys on the way. And they won't give you much time to get turned around before producing again. In captivity they are especially prolific breeders.