My family doesn't like my partner, what can I do to make things better?

Family usually want what best for their family. There are anomalies, but since you care to ask, I would assume they want what best for you. Even if they could be wrong :). Perhaps start with try to understand their point of view may help. Where did the feelings come from? ___ Is it rational? reasonable? unbias? based on facts? etc___ If it is unreasonable, subjective, bias, or even more unfair, then you may want to set up expectations and boundaries with everyone. What your family can expect from you related to your partner, as well as what your partner can expect from you related to your family. Along with that, you also need to be aware of what you can expect from your partner related to your family expectation. If everyone can maintain to respect others' boundaries, hopefully things will be alright. Maybe not perfect, but it can be a start. Hope it can help a bit.