One possibility for the treatment of municipal waste and solid manure from livestock is composting, also called aerobic reprocessing. The organic substance shall not to be reduced but rather stabilized through the generation of humic matter. Carbon is fixed and nitrogen immobilized. Humus, and hence also compost, is influencing the functions of soil positivly. A composting experiment has been developed in cooperation with a compost plant over a period of 3 months. Four compost heaps, consisting of biogenous wastes from households like kitchen wastes and green waste, as well as shrub cutting material mixed with different share of horse manure (6 %, 12 %, 40 %) had been set up. The major composting parameters had been analyzed and the different models had been compared with respect to the composting process and the quality of the product. In the Compost Ordinance (Federal Law Gazette II No. 292 /2001) quality criteria as humic acid have not been considered so far, but could serve in future via quality grade classifications as a basis for the monetary evaluation of compost. With regards to the humic acid creation, not the total amount of organic matter is decisive, but ist composition. The horse manure addition has a positive effect on the decomposition process, the hot rotting , documented on the measured values or results of temperature, NH4- N , NO3 -N and breathability is faster. The biggest impact is given by the structural material, because due to better oxygenation the degradation is more rapidly. A uniform oxygen supply can only be ensured with enough structure in the initial material composition. There is no clearly better end product with horse manure, regarding to the total nutrient contents. The rate of humification rises with the increase of the C/N ratio in the organic waste by horse manure . However, the variants in which organic waste and horse manure were not combined reached the highest humic acid contents. The use of horse manure in composting is a beneficial alternative to stack manure storage, especially because of the high mineralization rates under anaerobic conditions.