以下就是我的建议用英语怎么说

"My suggestion" is the phrase you are looking for in English. It is a direct translation of the Chinese phrase "我的建议".
For example:
"Here is my suggestion for the project plan."
"I have a suggestion for how to improve the design."
"Suggestion" is a noun that refers to a proposal or an idea put forward for consideration or action. It is often used in a professional or formal context to present a solution or a proposal for improvement.