The invention discloses a full-automatic plasma processing equipment and method. The equipment comprises a pH pump, an acetic acid pump, an ethanol pump, a plasma pump, a plasma precipitation reaction pool, a buffer solution circulating pump, a buffer solution trap, a buffer solution tank, a three-way valve and a feedback control system; the pH pump, the acetic acid pump and the ethanol pump are communicated with the buffer solution trap and the buffer solution tank respectively through a first mixer, the feedback control system is arranged between the buffer solution trap and the buffer solution tank, and the feedback control system is electrically connected with the pH pump, the acetic acid pump and the ethanol pump; the first port of the three-way valve is communicated with the buffer solution tank, the second port of the three-way valve is communicated with the plasma precipitation reaction pool, the third port of the three-way valve is communicated with the buffer solution circulating pump, and the buffer solution circulating pump and the plasma pump are communicated with the buffer solution tank through a second mixer. Accordingly, full automation can be achieved, the conductivity, ethanol concentration and acidity and alkalinity of a buffer solution are accurately controlled, protein in the plasma is precipitated through online verification, the recovery rate and yield of the plasma protein can be increased, and profit rate is increased.