Abstarct: Problems of environmental and economical in disposal municipal solid waste (MSW) and also loss of soil organic matter in the country have been caused more use from MSW compost. This study was conducted to evaluate the effects of MSW compost on some chemical properties of soil and yield of tomato (Lycopersicum esculentum, var. mobile), as two experimental procedures laboratory (incubation) and field. The factorial experiment was carried out as completely randomized design with three sources of MSW compost (powder compost, sulfurous granular compost and sulfurous granular compost + thiobacillus), five rates (0, 15, 30, 45 and 60 t/ha) and five reaction times (0, 60, 90, 120 and 150 days) with three replications. DTPA-extractable Fe, Cu, Mn and Zn, soil electrical conductivity (ECe) and available sulfate (SO4-2) were measured in the incubated soil samples after the given reaction times. The results showed that DTPA-extractable Fe, Cu, Mn and Zn increased with the increasing rates of MSW compost significantly (P<0.05). Also MSW compost decreased soil pH but increased ECe and SO4-2. However, by increasing the reaction time, soil pH increased and ECe decreased. Sulfurous granular compost has been the most effect on decreasing of soil pH, increasing of ECe and available sulfate (SO4-2). In field experiment, maximum yield of tomato obtained from application of 45 t/ha sulfurous granular MSW compost. The highest Fe concentration in leaf was obtained from the control treatment and least amount was related to 30 t/ha MSW compost. Concentrations of Zn and Cu increased but Mn decreased in leaf with increasing application of MSW compost. There is no difference significantly between three sources of MSW compost on Fe, Cu, Mn and Zn concentrations.