Nucleic acid delivery controlling system and method for manufacturing same, and nucleic acid sequencing device

The present invention provides: a nucleic acid delivery controlling system in which a novel delay principle is utilized to greatly delay the nanopore passing rate of a nucleic acid strand, thereby enabling the stable analysis of a nucleotide sequence; a method for manufacturing the nucleic acid delivery controlling system; and a nucleic acid sequencing device. The present invention relates to a nucleic acid delivery controlling system, equipped with a passage through which a nucleic acid strand can pass, said nucleic acid delivery controlling system being characterized in that the passage through which a nucleic acid strand can pass has at least one nanochannel having multiple passages per one nanopore through which only one molecule of the nucleic acid strand can pass, the nanochannel has a microphase-separated structure composed of a block copolymer that is composed of a hydrophobic polymer chain and a hydrophilic polymer chain, and the nanochannel contains the hydrophilic polymer chain of the block copolymer as the main component.