He graduated from "Agricultural Economics," then defended his doctoral dissertation.

He was an adviser to President Zhelyu Zhelev on agrarian issues.

Twice minister of agriculture - in the caretaker government of Reneta Indzhova (1994–1995) and Stefan Sofiyanski (1997).

The 2011 Bulgarian presidential election was a candidate for president of the Blue Coalition.

In December 2016, the Reformist bloc was commissioned to attempt to form a government, with Hristov speaking hopefully to the media.