In this paper, it was aimed to investigate physicochemical and sensorial characteristics of cocoa sponge cake containing xanthan gum during maintenance interval. To reduce the stiffness of the texture, preserve moisture content and suitable sensorial properties during the shelf-life of these types of products using gums can be necessary. The treatments were included 0, 0.1, 0.2 and 0.3% xanthan gum. Moisture, ash, protein, volume values, texture and sensory evaluation of cake were evaluated and for investigating shelf-life, cakes were stored up to 30 days. It demonstrates xanthan gum improves the characteristics of the cake during storage. Using 0.2% of xanthan gum increased volume value (126 ml/g at first day). Moreover, a decreasing trend was observed up to 0.2% gum in hardness, cohesiveness, springiness, gumminess and chewiness of cake. In terms of sensory evaluation, no significant difference was observed between most of the treatment factors (only the aroma of control was significantly different from the treatments). So using xanthan gum in the cake formulation has economical positive aspect and affect quality of final product and its nutritional properties.