At present, sugar is produced following the three stage boiling technology or the three and a half stage boiling technology. It takes a long time and high energy consumption to boil the B sugar and C sugar. The value the by-product is low. There are high costs and weak adaptability to the market.

Generally, it is advantage to regulate sugar production and ethanol production according to market demand the flexibility while applying the "Simultaneous production of sugar and
ethanol" mode. It is necessary to distribute the raw material fluxes rationally. However, less literature is related to juice and syrup distribution for simultaneous production of sugar and ethanol. In this paper, material fluxes balance calculation is carried out according to Brazil experience and the parameters of three and a half stage boiling process. The feed syrup is 60 Bx, the purity is 87%, and the feed syrup fluxes are 100 tons. The sugar combined fuel ethanol process is showed as Sugarcane for simultaneous production of sugar and ethanol

In China, biotechnology research and genetic improvement have led to the development of strains which are more resistant to disease, bacteria, and pests, and also have the capacity to respond to different environments, thus allowing the expansion of sugarcane cultivation. The leading sugar enterprise in charge for applied research on agriculture, together with research developed by state institutes and universities. Efforts have been concentrated in taking advantage of its genetic diversity and high photosynthetic efficiency characteristic, high separation sugarcane population was generated via distant hybridization technology. To obtain the new material of sugarcane for ethanol, we took total biomass, total fermentable sugars as targets and adopted advanced photosynthetic efficiency living early — generation determination technology, molecular markers and cell engineering technology combined with conventional breeding. Then, in order to optimize the selection of energy sugarcane, we took a series of pilot test and technical and economic indexes of evaluation. By 2010, more than 10 sugarcane varieties for simultaneous production of sugar and ethanol are cultivated in China, such as "00-236", "FN91-4710","FN94-0403", FN95-1702","G94-116",
"Y93-159", "Y94-128", "G-22" et al.. Although potential benefits are high, there is still a lack of understanding of the potential impacts of genetically modified organisms on environmental parameters.