An assembly light bar structure includes: a substrate, having at least one recess; a first conductive elastic element and a second conductive elastic element, disposed on the substrate and respectively located at two parallel sides of the recess; and at least one light-emitting element. The light-emitting element is compressed by the first and second conductive elastic elements to be removably fixed in the recess of the substrate. The light-emitting element is electrically connected to the first and second conductive elastic elements.