The invention discloses a signal collection circuit of a novel electronic sensor. The signal collection circuit comprises an optocoupler isolation circuit, a filtering circuit and an AD sampling circuit which are sequentially connected, wherein the input end of the optocoupler isolation circuit is externally connected with the output end of the electronic sensor, and the output end of the AD sampling circuit is externally connected with an FTU control chip. The signal collection circuit matched with the electronic sensor is realized; all types of interference pulses included in an input quantity are blocked at an input side through the optocoupler isolation circuit, and then signals passing through the optocoupler isolation circuit are further filtered through the filtering circuit; and the signal collection circuit has high electrical isolation and anti-interference capabilities and guarantees the accuracy and reliability of the collected signals.