BEIJING--China's business climate index rose to 135.6 in the second quarter of this year, up 1.8 points from the previous quarter, said the National Bureau of Statistics on Friday.

The bureau said the index of the information transmission and software sector rose 14.7 points to 165.1, topping all industries. Indices of construction, social service, accommodation and catering enterprises also rose.

Meanwhile, the wholesale and retail sector index dropped 4.2 points to 149. Indices of transportation, postal and real estate enterprises also dropped.

The index reflects the operational climate of enterprises. A reading above 100 indicates an upward trend for the business climate.

The country's entrepreneurs were less confident in the economy during the second quarter as the Entrepreneur Confidence Index dropped 5 points to 132.4. The index has been on the rise after hitting an eight-year low of 94.6 in the fourth quarter of 2008.

The confidence of construction company managers was greatly shaken with the sector's index slumping 6.6 points to 139.

The index results were based on a survey of a large number of enterprises nationwide. It is compiled on the basis of the understanding, views, judgements and expectations of entrepreneurs concerning the external environment of the market economy and the macro policy and reflects the feelings and confidence of entrepreneurs in the macro economic environment.