The current study objective was to determine the mud crabs' level of sustainability in the Sidangoli mangrove habitat in North Maluku's West Halmahera Regency. From March to June 2022, this study was carried out in the Sidangoli seas of the North Maluku province of West Halmahera. Survey and interview procedures were employed. Ecological dimensions, biological dimensions, economic dimensions, social dimensions, and institutional dimensions were all measured. Direct sampling from fishermen's and collectors' catches yields ecological and biological dimensions. Utilizing interviewing techniques and a questionnaire, information on the social, economic, and institutional elements was also collected. The mangrove crabs were divided into groups according to species, sex, and carapace measured width. Moreover, gonad development was observed. Mud crab data analysis included sex ratio, size distribution and gonad maturity stage. Mud crab sustainability management status was evaluated using the Rapid Appraisal for Fisheries RAPFISH method. The results of the analysis found that the size distribution of the carapace width of the male mud crab was 4.38-9.12mm and that of the female was 3.39-8.85mm. The percentage of mature mud crabs was 53%. The multidimensional status of the sustainability of mud crab management in Sidangoli is quite sustainable with an index value of 58.97%.