The invention discloses a large-size concrete surface appearance, temperature difference and shrinkage performance detection test mold. A front wallboard and a rear wallboard of the test mold are connected through studs, clamping slots are welded at four corners of each of the front wallboard and the rear wallboard respectively and used for clamping side wallboards, three thermodetectors are mounted on the front wallboard and used for detecting the temperature of the center of a poured concrete block, the temperature of the position which is located in the same horizontal position with the center of the poured concrete block and is 50-100 mm away from the side wallboards and atmospheric temperature and can read and record the temperature change of the concrete in the test mold inthe hydration heat reaction process and temperature difference conditions of the inside and surface of the concrete, two distance meters are mounted on the rear wallboard and used for detecting the shrinkage and shrinking uniformity of the concrete, and thermal insulation cavities are formed in the outer sides of the wallboards of the test mold and used for storing thermal insulation materials to detect theperformance of concrete under the thermal insulation materials. The thermodetectors and the distance meters of the test mold can be controlled by a CPU detection terminal, and real-time detection andsubmission of detection accuracy are facilitated.