The study examined the effects of market price on the socio-economic development of small-scale vegetable farmers in Southern Region of Zanzibar. Specifically, this study examined the effect of price movement on the socio-economic development of small-scale vegetable farmers in Southern Region of Zanzibar. The study used a cross-sectional study design and data was collected using questionnaire from small-scale vegetable farmers in Southern Region of Zanzibar. A simple random sampling method was used to pick up a sample size of 149 small-scale vegetable farmers from the target population. The findings from descriptive statistics showed that 116 respondents either agreed or disagreed that price fluctuations threatened Socio-economic development of small-scale vegetable farmers. The regression analysis showed market price would affect Socio-economic development of small-scale vegetable farmers with 59.2%. The study recommended the government to develop positive and proactive measures to make prices of vegetables stabled and in any case the prices of vegetables should raise instead of falling. This would guarantee that socio-economic development of small-scale vegetable farmers is not affected.