The geographical location of Zhengzhou ring road section of Beijing-Hong Kong-Macao expressway is important. In order to implement the work requirements of the provincial Party committee and the provincial government to "make the traffic more convenient and driving more smoothly", through the investigation of advanced transformation cases inside and outside Henan province and the comparison of various schemes, it is finally determined that the overall scheme of long circular hole landscape guardrail is adopted for the central divider, and a variety of plants are alternately planted for the central divider. The first drip irrigation method of green plants in the middle zone in Henan province was introduced, which provided an example for the guardrail upgrading and reconstruction project in Henan province.