这两个单词没什么区别，下面是柯林斯词典上的解释，比较多，是按照用法排列的，看过后你就比较清楚如何使用这两个单词了。学英语有时候不必较真，老外都分不清楚呢。
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get through
1.get through gets through; getting through; got through or gotten through
If you get through a task or an amount of work, especially when it is difficult, you complete it.
I think you can get through the first two chapters.
PHR-V
2.get through gets through; getting through; got through or gotten through
If you get through a difficult or unpleasant period of time, you manage to live through it.
It is hard to see how people will get through the winter.
We couldn't get through a day without arguing.
PHR-V
= last
3.get through gets through; getting through; got through or gotten through
If you get through a large amount of something, you use it. (mainly BRIT)
We've got through a lot of tyres.
You'll get through at least ten nappies a day.
PHR-V
4.get through gets through; getting through; got through or gotten through
If you get through to someone, you succeed in making them understand something that you are trying to tell them.
An old friend might well be able to get through to her and help her.
The message was finally getting through to him.
PHR-V
5.get through gets through; getting through; got through or gotten through
If you get through to someone, you succeed in contacting them on the telephone.
Look, I can't get through to this number.
I've been trying to ring up all day and I couldn't get through.
PHR-V
6.get through gets through; getting through; got through or gotten through
If you get through an examination or get through, you pass it. (mainly BRIT)
Did you have to get through an entrance examination?
PHR-V
7.get through gets through; getting through; got through or gotten through
If a law or proposal gets through, it is officially approved by something such as a parliament or committee.
He would be very disappointed if his referendum law failed to get through.
Such a radical proposal would never get through parliament.
PHR-V
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1.go through
goes through; going through; went through; gone through
If you go through an experience or a period of time, especially an unpleasant or difficult one, you experience it.
He was going through a very difficult time.
South Africa was going through a period of irreversible change.
PHR-V
2.go through goes through; going through; went through; gone through
If you go through a lot of things such as papers or clothes, you look at them, usually in order to sort them into groups or to search for a particular item.
It was evident that someone had gone through my possessions.
PHR-V
3.go through goes through; going through; went through; gone through
If you go through a list, story, or plan, you read or check it from beginning to end.
Going through his list of customers is a massive job.
PHR-V
4.go through goes through; going through; went through; gone through
When someone goes through a routine, procedure, or series of actions, they perform it in the way they usually do.
Every night, they go through the same routine: he throws open the bedroom window, she closes it.
PHR-V
5.go through goes through; going through; went through; gone through
If a law, agreement, or official decision goes through, it is approved by a parliament or committee.
The bill might have gone through if the economy was growing.
PHR-V
= get through