The paper aims to update and activate the urban furniture of Guangzhou Historical and Cultural District, repair and improve the space and environmental quality of the district. Through field investigation and sampling analysis, the main problems such as limited urban furniture stock space, inadequate system, weak science and technology, single function and lack of management in Guangzhou Historical and Cultural District are summarized and analyzed from the perspectives of system, function and management. Four repair design strategies of systematism, ecology, intensification and intelligence are put forward and the design practice verification of ecological curb, intensive bus kiosk and intelligent guardrail single urban furniture is carried out based on smart city and urban double repair. Systematic, ecological, intensive and intelligent repair design strategies will help to improve the urban furniture system, repair the urban ecosystem, improve the urban functional system, and improve the urban management ability.