Construction device for subway

The invention relates to the field of subway engineering construction, and discloses a construction device for a subway. The construction device comprises a cross beam overhead at the top of a subwaytunnel, wherein a measurement and control device is arranged at the lower side position of the cross beam, the measurement and control device comprises a control box fixed at the lower side of the cross beam and a camera device arranged on the lower end surface of the control box, a connecting rod extends from the lower end surface of the control box, a mounting disc is fixed at the lower end of the connecting rod, and a temperature detection unit, a humidity detection unit and an illumination detection unit are arranged on the lower end surface of the mounting disc, subway construction site conditions can be acquired in real time through the camera device, and the acquired image information is remotely transmitted to a main controller of an operation room, the main controller can controla display module to displa