Micro-financing strategy is key to sustainable development of entrepreneurship in the business world. This study empirically determines the effect of micro financing strategy on sustainable increase in productivity of businesses in Nigeria. The instrumentality of the study is the research questions structured in close-ended five-point Likert scale .The evaluation of the relationship between dependent of productivity and independent variables of strategic entrepreneurship management practice proxies by micro financing strategy was performed using the Ordinary Least Square regression technique. The study found that micro financing strategy has a positive and statistically significant relationship with firm productivity. It was recommended that the government at various tiers should review business laws adverse to the survival and growth of small businesses to enhance firm productivity; identify supportive infrastructures needed to stimulate agro-allied businesses in order to prioritize the execution of infrastructures needed to facilitate technological advancement, boost sustainable development of agro-allied small businesses and the economy as well as equipping intending investors with adequate knowledge of the agro-allied business due to the specialized and delicate nature of agricultural business in Nigeria to avoid losses of investment.