The invention discloses a design method of building component production process distribution. The design method comprises the following steps that a die platform is cleaned firstly, then a steel bartemplate and an embedded part are installed, primary concrete pavement is carried out, at this moment, according to the need, if no secondary template installation is required, then the die platform can be moved from a primary pavement station to a secondary pavement station by the horizontal-moving car of the die platform, and the station installation through a secondary template is reduced; andwhen a secondary template installation is required, the secondary template is firstly moved to the secondary template installation station for installation then moved to the secondary pavement stationfor pre-maintaining and stereo maintenance, and finally a building component is obtained after demoulding. The production of insulating outer and inner walls and composite floor slabs according to production needs, when the inner wall and the composite floor slabs are manufactured, the die platform can avoid through the second template installation station, and the time can be saved and the construction efficiency is improved.