The market is one of the waste producers which is classified as complex, so it has great potential as a source of environmental pollution that occurs as a result of buying and selling activities. Market waste in the form of left over vegetables, fruits and other food ingredients which can cause odors and reduce market aesthetics, as well as soil contamination. The aim of the research was to determine the generation, composition, specific gravity and moisture content of waste at the Mamuju Central Market, as well as a plan for proper waste management. This research method uses a quantitative survey approach by taking a number of samples based on SNI 19-3964-1994. Sampling was carried out from 04 August to 11 August 2022. The sample was taken of 30 merchant stalls from a total of 591 kiosks which were carried out for 8 (eight) consecutive days by measuring the volume and weight of waste for each kiosk using a waste measuring box with a volume capacity of 40 liters. then the waste from all the kiosks is put together in a waste measuring box with a volume capacity of 500 Liters. After that, it is separated based on the composition of the waste and weighed based on the type of waste. As many as 2 kg of samples were taken to check the water content of the waste at the Integrated Laboratory of the Mamuju Polytechnic of the Ministry of Health. From the results of this study it was found that the average waste generation at the Mamuju Central Market was 27.34 L/trader/day with the highest waste composition, namely organic type waste of 91.15%. The specific gravity and moisture content of the waste are on average 0.18 Kg/m³ and 36.20%. The appropriate waste management plan based on the data obtained is the composting method, considering the high composition of organic waste in the Mamuju Central Market. For this reason, it is necessary to empower traders to make composters to minimize the organic waste they produce Keywords: Waste, Characteristics, generation