Automatic drainage device for cable manhole

The utility model discloses an automatic drainage device for a cable hand well hole. A well lid (2) covers the hand well hole (101); an annular groove (2.1) is formed in the top face of the well lid body (2), an annular solar cell panel (3) is embedded in the annular groove (2.1), a charging and discharging management module (4) and a storage battery (5) are embedded in a cavity in the well lid body (2), and the annular solar cell panel (3) is connected to the storage battery (5) through a cable via the charging and discharging management module (4). Wherein the water pump (1) is arranged in the cable pipe trench (102), a liquid level switch (6) is arranged on the trench wall of the cable pipe trench (102), the storage battery (5) is connected to the power input end of the water pump (1) through a wire after passing through the charging and discharging management module (4), and the liquid level switch (6) is connected to the wire connected between the charging and discharging management module (4) and the wa