The invention provides a high-altitude jack fruit picking device. The high-altitude jack fruit picking device comprises a manumotive storing vehicle, a retractable casing pipe perpendicular to the ground, an electric saw, a retractable rod perpendicular to the ground, an elastic sleeve net for fruits and a rotary operating rod, wherein a storing space is formed in the manumotive storing vehicle, and an accumulator is mounted in the storing space; the bottom end of the retractable casing pipe is fixed at the top of the manumotive storing vehicle; the electric saw is perpendicular to the ground, an electric saw protective sleeve is arranged under the bottom end of the electric saw, and the electric saw protective sleeve is connected with the top end of the retractable casing pipe; the top end of the retractable rod is connected with the bottom end of the electric saw, the bottom end of the retractable rod is connected with one end of a steel rope, the retractable rod is mounted in the upper part of the retractable casing pipe in a sleeving manner, and the other end of the steel rope penetrates through the upper part of the retractable casing pipe, and a hole close to the top end is exposed; the opening of the elastic sleeve net for fruits is upward, and the elastic sleeve net is fixed at the upper part of the retractable casing pipe through a sleeve net ring; one end of the rotary operating rod is hinged to the middle part of the retractable casing pipe through hinging shafts, and an electric operation button is arranged on the rotary operating rod. The high-altitude jack fruit picking device disclosed by the invention is used for picking jack fruits.