Template fixing device and construction method

The invention relates to a template fixing device. The template fixing device comprises two sets of templates arranged face to face and a steel plate wall arranged between the templates, wherein a plurality of templates holes are formed in the templates correspondingly, a screw sleeving pipe connected with the steel plate wall is installed between every two corresponding template holes; plugs areinstalled at one ends, connecting with the template holes, of the screw sleeving pipes, screws are installed in the screw sleeving pipes, and the screws penetrates through the templates and are fixedly connected to templates. The invention further provides a construction method of the template fixing device. The construction method comprises the following steps that S1, the steel plate wall and the two sets of templates with templates holes are installed; S2, the screw sleeving pipes and the plugs are installed; S3, the screws are installed in the screw sleeving pipes and fixed to the templates; S4, concrete is poured