The invention relates to a radio match couple network of vacuum reaction room, which comprises: first to n radio sources; each radio source has different frequency, while the frequency from the first to the n radio input port are reduced; the input ports of first radio and the output port form i circuit; the first i circuit has high resistance to the radio sources except the i frequency; when the i circuit is connected to the i frequency radio source, testing from the output port toward to the i circuit, it has the first resistance at the i frequency, and testing reversed, it has the second resistance under the i frequency; said first and second resistances are matched. The invention has low weight, less consumption and reduced cost. |