Introduction: Qihe County is located in the northwest plain of Shandong, facing Jinan, the provincial capital, across the Yellow River. Total area 1 4 1 square kilometer, of which cultivated land1080,000 mu governs 9 towns and 5 townships,1economic development zone and1street office,101. The total population is 630 thousand. According to the textual research of unearthed large objects, as early as four or five thousand years ago, there were clans living in Qihe. In Qin dynasty, a county was set up, and in Song dynasty, it was called Qihe County. The county seat was the fief of Yan Ying in the Spring and Autumn Period, hence the name "Yan", and it was called "Yancheng" when the city was built and the house was repaired.