Keyword ranking get down?

My site keyword rank get down. Can any one suggest me what is the reason? and how to get back?

You should get quality and related links pointing with the targeted keyword pointing to your site as there more competition these days.

Tell your website URL then it will very easy to tell what exactly happens to your website.

If you did any thing wrong or used black hat techniques the your website will loose original ranking and also Google will ban your site. Get related links only don't get any adult and gambling links.

hi
My site name is autofinancing123.com and suggest me what to do.

Just continue link building..

I want to give you suggestion that choose your keyword according to webpage not according to website. I am sure after that it will effect the ranking of the site.

Link Exchanges
this technique is commonly employed to exchange links with other web masters. Where you place a link back to his/her site from your web page, and they'll place a link back to yours.

Article Writing and Submission
Another technique is by creating and distributing information and content to other web pages. There are many web sites that accept article submission and offers for distribution as indicated all over the Internet.

Press Release Submission
It is a way to deliver latest news events within your company. However, it is written in such a way that it will rank well in the search engines for your keywords and provide your website with important back links that will also help boost its position in the search engine rankings.

Directory Submission
Is a very cost-effective way to get links and helps to establish a foundation for Internet marketing.

Social Bookmarking
is an online method of storing, organizing, sharing and searching bookmarks of selected web pages. A bookmarking site allows members to save links they have an interest in, as well as sharing them with others web users.

Forum Posting and Blog Commenting
By posting regularly to these forums and blogs, and properly utilizing the signature tags, you can generate much needed back links to your web page which helps with search engine optimization for your site.

Chek your site back link it's good or bad

You can put good backlinks and good content. Google does not accept bad backlinks.