Keep reading english material and keep listening to native-level english, do not force yourself to speak for a while and just create an environment in which you're always exposed to english. Since your reading skills are good you could start watching english movies with english subtitles, so you can build a connection between what's written and what is said. Also you could get ahold of some english audiobooks and listen to them as you follow along with a physical copy of the book (or an ebook)...that also could build a good connection between written and spoken material. Just remember: at your current level speaking will not improve your english (might even damage it), so focus more on absorbing the language.

This is how I would ask the question: What should I do as a student who can read English well but cannot understand what I hear and cannot speak English? “Listen” means to pay attention, to make an effort to hear. It does not necessarily mean understanding. We do not usually use "in" with the expression “speak a language.” Speaking a language is as much a physical skill as a mental one. When you read, you should read out loud so that your speech organs actually make the sounds. Memorizing English dialogues, conversations about everyday subjects or everyday situations is also a good exercise. Talking with a native speaker is, of course, very good training although I realize that’s not always easy for someone in China. For understanding spoken English, my friends in Taiwan had a technique. The expression 我们去学习英文把 is translated “Let’s go to a movie.”　

listen more.... this is the best question on italki ever :P

Here are some tips for improving spoken English http://www.italki.com/knowledge/page/Spoken%20English.htm

Hi this Italki site will help you improve your listening skills http://www.italki.com/knowledge/page/IMPROVE%20YOUR%20ENGLISH%20LISTENING%20SKILLS.htm