I run out of cooking idea and look for good cook book for child. Which one should I buy?

Perhaps you can try one of Jamie Oliver's cookbooks. Being a father and a proponent of healthy cooking as well as good nutrition for children, you can get plenty of great recipes from his cookbooks. You can try out some of his recipes here: http://www.jamieoliver.com/family-food/ - they are categorised into helpful sections like "Weaning food", "Family Basics" etc. He also has a YouTube channel called Jamie Oliver's FoodTube: https://www.youtube.com/user/JamieOliver

If your kid's age above 3 years old, basically he can eat whatever you cook (You just need to reduce the salt/sugar in it) Go check Baby Led Weaning cookbook. It contains more finger food with balanced nutrition. Not only good for your kid's health but also helping his motoric skill http://www.amazon.co.uk/The-Baby-led-Weaning-Cookbook-delicious/dp/0091935288

Love the Star Wars cook book! They really do have some cool feasible ideas for you to actually do it at home. Other than cook books, sometimes my kids and I watch Junior Masterchef and try to replicate the recipes and the experience. Guess who be the judge and get to taste all the food? Haha!

I found baby and Toddler cookbook really nice, it has very healthy recipes which are delicious and eay to prepare, sometime I cook them for myself also :D You can buy it from here:- http://opentrolley.com.sg/Book_Detail.aspx?EAN=9781740899802

You can try this awesome cookbook where you and your kids can interact and have fun while cooking Star Wars inspired recipes! http://www.amazon.com/The-Star-Wars-Cook-Book/dp/0811821846

I like the little Singapore Cook book and the harry potter cook book a lot. May be you can try them if have not yet done so. By the way the Star Wars cook book is also awesome.

I love Annabel Karmel's recipes. Her site online is very helpful too and breaks down recipes by age. http://www.annabelkarmel.com/gb/

thanks