The invention discloses a protective device for picking grapes at home, which comprises a cement platform, and a protective mechanism is arranged on the cement platform; a trampling and picking mechanism is arranged in the protection range of the protective mechanism; a supporting mechanism is arranged in the trampling and picking mechanism, and a line blocking mechanism is arranged in the protective mechanism. The trampling and picking mechanism includes a trampling table, a circular groove, a fixed bearing, a rotation axis, a circular fixed rod, a circular trampling rod, an inclined shore, aguard rail, a square groove, and a collecting tank; the protective mechanism includes a fixing column, a placing platform, an automatic take-up device, a line outlet passage, an intercepting plate, rolling wheels, connecting lines, a conical flaring, a connecting plate, connecting rings, a protection cushion, and an arc lock catch; the line blocking mechanism includes a small groove, a first electromagnet, a metal line blocking plate, a first semi-circle line blocking hole, a line blocking groove, a second electromagnet, a fixed plate, and a second semi-circle line blocking hole; a controlleris arranged at the upper end of the one fixing columns. The protective device for picking the grapes at home has the advantages of simple structure and strong practicability.