Wide Field of View Cherenkov Telescope Array (WFCTA) is one of the main detector arrays in the Large High Altitude Air Shower Observatory (LHAASO). Its physical goal is to measure the cosmic ray energy spectrum from 30 TeV to several EeV. The telescope readout electronics system consists of 1024 channels and the signals to be processed include both Cherenkov signals with pulse widths of tens of ns and fluorescence signals with pulse widths of μs. This paper describes the framework design of the telescope readout electronics system in detail. In order to reduce the amount of data, an online trigger is designed, that is to say, the first-level hardware trigger is performed on the subcluster electronics, and then the event trigger is implemented on the trigger circuit. At the same time, the electronic system uses a 4-point compression method to obtain waveform data, covering a waveform width of 2.24 μs. The laboratory test results show that the readout electronics system can correctly obtain the signal waveform, and the dynamic range of the charge measurement can cover 10 P.E. (Photon Electron) to 32 143 P.E. The overlap area of the high gain channel and the low gain channel is from 857 P.E. to 1 714 P.E., and the high-low gain ratio is consistent with the design. The charge resolution is better than 20% at 10 P.E., better than 5% at 32 000 P.E., and the relative deviation is better than 5% at 10 P.E., and better than 2% at 32 000 P.E, and thus readout electronics system meets design requirements.
