Provided are a lamp-string grid screen and a luminous component, comprising a transparent wire and a lamp string wire; multiple transparent wires and multiple lamp string wires are arranged crosswise in a grid pattern; multiple lamp beads are arranged on the lamp string wire; the lamp beads on the lamp string wire are glued to the transparent wire, and multiple lamp beads are arranged in an array; or, the transparent wire and the lamp string wire are connected by a fastener, and multiple lamp beads are arranged in a diamond pattern.