The invention discloses an electronic frequency counter which comprises a rectification and voltage stabilizing circuit, a full-wave rectification circuit, a first wave shaping circuit, a frequency divider, a signal amplification circuit, a second wave shaping circuit, a control door, a counter body, a data latch, a display decoder and an LED display module. A power source is connected to the frequency divider through the rectification and voltage stabilizing circuit, the full-wave rectification circuit and the first wave shaping circuit in sequence. The output end of the frequency divider is connected to the control door and the data latch. A measured signal is connected to the control door through the signal amplification circuit and the second wave shaping circuit in sequence. The output end of the control door is connected with the input end of the counter body. The output end of the counter body is connected with the input end of the data latch. The output end of the data latch is connected with the input end of the display decoder. The output end of the display decoder is connected to the LED display module. The electronic frequency counter uses decimal numbers to carry out display, and is rapid in measurement, high in accuracy and visual in display.