The utility model discloses a model test chamber capable of performing positioning. The model test chamber comprises a square chamber body, and a positioning device mounted in the square box body, wherein each of four chamber wall of the square box body adopts a hollow structure; an L-shaped clamping groove is fixed in the hollow chamber wall of the square box body; the positioning device comprises a four clamping sleeves and a plurality of fixed plates; the four clamping sleeves are respectively arranged in the four hollow chamber walls; the clamping sleeves are fixedly connected with the square chamber body through first bolts; the first bolts are arranged on the square chamber body; a hollow sliding groove is formed in each clamping sleeve in the length direction; the fixed plates are arranged above the clamping sleeves; the fixed plates are fixedly connected with the clamping sleeves through second bolts; a horizontal scale line is arranged on the inner side of the top of each clamping sleeve in the length direction; vertical scale lines are arranged at four corners on the inner side of the square chamber body in the height direction. The model test chamber has a simple structure, is stable and reliable, and convenient to use, and can effectively position the position of model test material, thereby improving the accuracy of model test results, and is low in production cost and convenient to popularize and apply.