Intracranial deep electrode recording device and preparation method and system thereof

The invention discloses an intracranial deep electrode recording device and a preparation method and system thereof. The intracranial deep electrode recording device comprises a flexible substrate, afirst metal layer, a flexible packaging layer and a second metal layer, wherein the first metal layer is located on the flexible substrate, and the first metal layer sequentially comprises a rear-endwiring part, a metal interconnection part and a plurality of electrode monitoring wiring parts arranged at intervals; the flexible packaging layer covers the first metal layer; and the second metal layer is located on the flexible packaging layer, wherein one end of each electrode monitoring site is connected with a corresponding metal contact point in the corresponding electrode monitoring wiringpart through a through hole formed in the flexible packaging layer, and the other end of each electrode monitoring site is exposed outside to be used for monitoring intracranial biological signals. According to the intracrania