Haixing is a county in southeastern Hebei province, China, bordering Shandong to the southeast. It is administered by Cangzhou City. As of 2020, the county had a population of 189,273 people living within an area of 836 square kilometres (323 square miles).
Two major expressways pass through the county: the G18 Rongcheng–Wuhai Expressway and the G25 Changchun–Shenzhen Expressway. These routes connect Haixing with other parts of Hebei and neighbouring provinces.
The county's location on the border with Shandong gives it a position in the southeastern corner of Hebei, within the broader North China Plain region administered from Cangzhou.