To provide an easily and inexpensively manufacturable high-frequency oscillation circuit, capable of easily complying with increase of a basic frequency of a quartz oscillator serving as a weight sensor for a chemical sensor and maintaining stable high-frequency oscillation.

This high-frequency oscillation circuit uses a high-speed response logic element for forming a closed circuit, in which a high-frequency quartz oscillator is assembled. In sponge to the fundamental frequency of the quartz oscillator, ranging from 1 MHz to 2 GHz, a stable oscillation is generated at the fundamental oscillation frequency of each oscillator.