I have tried import a base image, thumbnail image and small image in magento 220.127.116.11 and itâs working properly
Where exactly do you see that they are working properly?
Can you see them in Admin? They are not shown in frontend only?
Please give me some detail information about that. Why this happen ??
First thing you should check is whether your product images were uploaded into correct directories - Magento has very strict rules for images.
If you’re not sure about it, you can try to reload them either using Magento Admin or using Store Manager software (it is more flexible and allows to upload images into correct directories) - http://www.magentocommerce.com/magento-connect/store-manager-for-magento.html
Once the above is checked, images are shown in Admin and are still missing on your site, you should check the caching options and template. It is checked in every specific case separately, so it\\\’s hard to say where to start from
Any details will help us to point you to the right direction.