Terahertz signal detection device

The invention discloses a terahertz signal detection device which comprises an integrated chip. A low-temperature semiconductor reading circuit and a superconductor detector are simultaneously arranged on the integrated chip, the low-temperature semiconductor reading circuit and the superconductor detector are mutually communicated, and the superconductor detector is used for detecting a terahertz signal. The terahertz signal detection device can not only reduce system noise, and improve sensitivity, working stability and operation speed of a superconductor terahertz direct detector, but also facilitates designing and manufacturing of an imaging system of a terahertz two-dimensional detection array based on a multichannel reading circuit. The terahertz signal detection device can integrate a superconductor component and a semiconductor component on the same chip, and can easily achieve metal thin film wire leading through micromachining technology. Due to the fact that an integration level is improved, a bonding pad is greatly reduced, and therefore, the aims that noise is reduced and systematic operation speed is improved are achieved.