The utility model discloses a full-automatic biochip microarrayer. The full-automatic biochip microarrayer is characterized by comprising a main engine, a three-axis movement platform, an injection pump, a mini-type solenoid valve, a micro-arraying needle, a micro-arraying platform, a film carrying platform, a touchable screen monitor and a camera. The full-automatic biochip microarrayer has the following advantages that full-automatic micro-arraying is realized; one microarrayer is provided with one micro-arraying needle and one micro-arraying needle is used for micro-arraying one sample; the micro-arraying needle is easy to wash and cross infection is avoided; the camera is used for monitoring the whole micro-arraying process and an alarm is sent as soon as leaked micro-arraying and wrong micro-arraying are founded so as to ensure the micro-arraying quality; a film carrying plate is movable, replaceable and detachable so that a chip is very convenient to mount and detach.