The invention discloses an intermediate 1-methoxyl-2,6,10-trimethyl-1,3,5,9-undecane tetraene and a preparation method and application thereof. The synthesis method of the current lycopene intermediate 2-bit double bond C-14 aldehyde (2,6,10-trimethyl-2,5,9-undecane triene-1-aldehyde) needs expensive methyl iodide, polluted dimethyl sulphide and dangerous strong base so that the current lycopene intermediate is difficult to apply to industrial production. The invention provides a new compound which is the 1-methoxyl-2,6,10-trimethyl-1,3,5,9-undecane tetraene, and pure 2-bit double bond C-14 aldehyde can be prepared by hydrolyzing and refining the compound. The preparation method of the 1-methoxyl-2,6,10-trimethyl-1,3,5,9-undecane tetraene, simplifies a synthesis route and is suitable for industrial production.