The SME development index gained 0.2 points to 89.3 last month, the China Association of Small and Medium Enterprises said.
The index contains multiple sub-indices to gauge the performances and expectations of SMEs.
Sub-indices for the real estate and social service sectors both went up 0.3 points last month, marking the most significant increases among all sectors tracked.
Bucking the upward trend, sub-indices for the construction and wholesale sectors both dipped 0.1 points during the period, according to the association.