Research on Firms Performance of Micro and small-sized enterprises (MSEs)  continues to grow, especially in developing countries such as Indonesia. This study is designed to build and validate the SME Performance  (SP) instrument  through the Exploratory Factor Analysis (EFA) which is limited to MSEs  in Pekanbaru, Indonesia. This study  analysed  variable of Entrepreneur Expertise (EC), Government Support (GS) and Entrepreneur Environment  (EE). This study followed a cross-sectional study style, with quantitative data obtained from 100 small and medium-sized enterprises based in Indonesia. This study Focused on  the reliability measure, this analysis completed the instrument in eighteen (31) pieces. In this case the researcher measures the internal reliability value (i.e. the Cronbach Alpha Value) for the current SP Variable. This research outlines in depth the process for carrying out an EFA examination of SP constructs. This research outlines in depth the process for carrying out an EFA examination of  SP constructs. The findings of this analysis may be useful for applied researchers involved in Entrepreneur Performance research.