The purpose of this study was to examine the effect of different sweeteners such as: saccharose, xylitol, aspartame and acesulfame on rheological properties of milk desserts obtained with the addition of whey protein isolate(WPI). The rheological properties of milk desserts were examined using a haake rs 300 rheometer in the temperature range from 85 to 20°C. The dessert texture was determined by TA-XT2i texture analyser. The hardest desserts were obtained from wpi with the saccharose addition. Their hardness was 212 g. The substitution of saccharose by other sweeteners caused general decline of rheological properties of the wpi desserts being examined. In the case of the desserts obtained with the skimmed milk powder, no significant effect of any sweetener applied on the dessert texture was observed.