Karst cave unattended fishing device

The invention discloses a Karst cave unattended fishing device, which comprises a cage body and a floating board, wherein the floating board is connected with the cage body through a rope; the cage body is provided with a horn-shaped channel; the channel is provided with an entrance and an exit; the entrance coincides with the outer surface of the cage body; the exit is located inside the cage body; a first metal sheet and a second metal sheet are arranged above and below the exit respectively; the floating board is provided with a control module, a capacitance induction module and a Bluetoothmodule; the input end of the capacitance induction module is connected with the first metal sheet and the second metal sheet; the output end of the capacitance induction module is connected with thecontrol module; and the control module is connected with the Bluetooth module through a serial port. the capacitance changes when a fish passes through the exit can be inducted through the capacitanceinduction module, a sampli