正确的是have confidence in。have confidence后面通常跟in，意思为“有信心，信任”。confidence作名词有“自信，信心信任，信赖把握，肯定保密，机密”等意思。
confidence意思
confidence作名词有“自信，信心信任，信赖把握，肯定保密，机密”等意思。复数confidences
confident例句
He has a lot of confidence in himself.
他信心十足。
He lacked the confidence to succeed.
他缺乏必胜的信心。
It takes time to build/gain confidence when you are learning a new skill.
学习新技能时，你需要时间建立/获取信心。
They have complete/full confidence in their coach.
他们充分信赖自己的教练。
We still can't talk about the future with any degree of confidence.
谈到未来我们仍然没有把握。
She accused him of betraying a confidence.
她指责他泄露了她的秘密。
短语搭配
have confidence in somebody/something 信任某人/某事物
lose confidence in somebody/something 对某人/某事物失去信心
gain/win somebody's confidence 得到/赢得某人的信任
restore confidence 恢复信心
have every/complete/absolute confidence in somebody/something 绝对信任某人/某事物
a lack of confidence 缺乏信任
a crisis of confidence 信任危机，信心危机
confidence后用什么介词
confidence后用介词in
例句
1、
It took a long time to gain her confidence.
我花了很长的时间才赢得她的信任。
2、
The party was suffering a crisis of confidence among its supporters.
当时这个政党在其支持者中正遭受信任危机。
3、
The Government will have to work hard to win back the confidence of the people
政府必须勤奋工作以重新赢得人民的信任。
