Objective To obtain the data of market share and labeling status of genetically modified(GM) soybeans and their products in Shenzhen and provide scientific basis for government regulations.Methods In accordance with the monitoring plan,soybeans and their products were randomly collected from markets in Shenzhen on a periodic basis.Qualitative and quantitative detection of GM ingredients were carried out by real time polymerase chain reaction(PCR).The market share and labeling status of GM soybeans and their products were assessed,and the results were compared to those of 2006.Results 106 samples were monitored in 2011,and two samples were found to contain GM ingredients with the content of 0.93% and 0.51% respectively.The market share of GM soybeans and their products was 1.89%.There was no GM labeling on the packages of GM positive samples.Compared to the results of 2006,no significant differences were found in the market share and labeling status of GM soybean products.Conclusion Current market share of GM soybeans and their products in Shenzhen(except edible oil) was still very low,and there was no significant increase in the past five years.The management of GMO labeling still needs to be strengthened,and government should intensify law enforcement on this issue.