Radio frequency electrode assembly for plasma processing apparatus, and plasma processing apparatus

Disclosed are a radio frequency electrode assembly for a plasma processing apparatus, and a plasma processing apparatus, wherein the radio frequency electrode assembly for a plasma processing apparatus comprises: a base in which a first fluid passage is provided, the first fluid passage being configured for connecting to a first fluid source; an electrostatic chuck disposed on the base; a focus ring disposed peripheral to the electrostatic chuck; a heat conducting ring disposed around the base, the heat conducting ring enclosing at least part of the base, the heat conducting ring being disposed below the focus ring, a second fluid passage being provided in the heat conducting ring, the second fluid passage being connected to a second fluid source, heat conduction being enabled between the heat conducting ring and the focus ring. The plasma processing apparatus can adjust polymers distribution in the edge area of the to-be-processed substrate.