Matrix rail system, incidence loop production line and working method of incidence loop production line

The invention discloses a matrix rail system, an incidence loop production line and a working method of the incidence loop production line. The rail system comprise a plurality of rail nodes; guide rails comprise fixing guide rails, direct-connection guide rails and turning guide rails; rail switch devices are arranged on the rail nodes; the two adjacent rail nodes in the horizontal direction andin the vertical direction are connected by a plurality of parallel fixing guide rails; the rail switch devices comprise direct-connection guide rails, turning guide rails and guide rail switching mechanisms; and the multiple fixing guide rails, the multiple direct-connection guide rails and the multiple turning guide rails are connected with one another end to end to form a closed loop. The incidence loop production line is achieved based on the matrix rail system; a structure of the incidence loop production line can be changed at any time according to a requirement due to good generality andflexibility, and the inci