The invention provides a tumor
electric field treatment system, a temperature detection method and a
signal control method, the tumor
electric field treatment system comprises at least one pair of
electrode plates, an
electric field generator and an adapter, each
electrode plate comprises a plurality of
electrode units and a flexible circuit board, the flexible circuit board is embedded with a plurality of grounding wires and a plurality of dual-purpose
signal wires, each grounding wire enables the electrode units located in the same row to be in
short circuit and grounded, and each dual-purpose
signal wire enables the electrode units located in the same column to be electrically connected and can transmit
alternating current electric signals and temperature detection signals. The adapter comprises a plurality of groups of multi-path circuit lines, at least part of the circuit lines in each group of multi-path circuit lines are electrically connected with the multi-path grounding lines and the multi-path dual-purpose
signal lines of the corresponding electrode plates in a one-to-one mode, and at least one circuit line in each group of circuit lines is in an idle state and is not electrically connected with the dual-purpose
signal lines or the grounding lines of the corresponding electrode plates. Therefore, the adapter can be adapted to various electrode plates with different numbers of grounding wires and different numbers of dual-purpose signal wires.