The invention discloses a vertical liquefied natural gas re-condenser. The vertical liquefied natural gas re-condenser is characterized in that the vertical liquefied natural gas re-condenser is mainly composed of an outer barrel, an LNG uniform distributor, an inner barrel and filler; the LNG uniform distributor is arranged on the upper portion of the outer barrel, the inner barrel is arranged ona bottom end seal of the outer barrel, an annular space with the bottom closed and the upper portion opened is formed between the inner wall of the outer barrel and the outer wall of the inner barrel, and the filler is arranged on the upper portion of the annular space; a gas-liquid mixed space is formed by the space below the LNG uniform distributor and above the filler, and a liquid phase spaceis formed by the portion, below the filler, of the annular space; and an LNG inlet is formed in the LNG uniform distributor, a bottom BOG inlet is formed in the center of the bottom end seal of the outer barrel, an upper portion BOG inlet is formed in the side wall of the gas-liquid mixed space, and an LNG outlet is formed in the portion, at the bottom of the annular space, on the side wall of the outer barrel. The single-tank double-shell type structure is adopted for the vertical liquefied natural gas re-condenser, BOG is subjected to the two condensation processes of the inner barrel condensation space and the filler condensation space, and the condensation efficiency of the re-condenser is greatly improved.