区别如下：
1、词性不同：good是形容词，well是副词
Her son is a good student. 她儿子是一个好学生。
All went well .一切顺利 （well是副词修饰动词went）
2、所修饰词不同：good 形容词修饰名词，或做表语，well 修饰动词，副词，形容词。
She is a good girl.（good在此修饰girl） 她是一个好女孩。
He plays basketball very well.(well在此修饰动词play) 他打篮球特别棒。
3、关于身体健康状况,要用well,不能用good.
I'm very well, thanks. 我身体很好，谢谢。
扩展资料：
well [wel]
adj. 健康的，良好的，适当的
n. 井
vi.（像泉水般）流出，涌出[1]
基本要点：
⒈well用作动词的意思是“（像泉水般）流出，涌出，喷出”。
⒉well是不及物动词，常与副词out,over,up连用。
同义词：swell
词汇搭配：
～+副词
well out from the cut 从伤口流出来
well over with joy 满怀喜悦
well up 夺眶而出
well up in one's eyes 涌上某人的眼眶
well up inside sb 内心充满幸福
well up with tears 泪如泉涌
～+介词
well out of the ground 从地下涌出
句型：
1、well out from sth
Blood welled out from the cut.血从伤口流出来。
2、well out of sth
Oil welled out of the ground.原油从地下涌出。
3、well over
She poured too much milk in the glass,and it welled over.她往杯子里倒的牛奶太多，溢了出来。
His heart welled over with joy.他满怀喜悦。
4、well up
She was so angry that the tears welled up.她气得眼泪夺眶而出。
Happiness welled up inside me.我内心充满了幸福。
Tears welled up in her eyes.她眼泪盈眶。
Anger was welling up in him.他怒火中烧。