Objective To develop a quick and convenient method for the extraction of total DNA of Taraxacum Officinale.Methods Three isolation methods including modified CTAB method,SDS method and low pH medium with high salt method and the two grinding methods of nitrogen and glass-sand were used for DNA extraction.The purity and concentration of DNA were analyzed with UV absorption and electrophoresis method.Results The DNA purity and concentration were different.The result of modified CTAB method was the best.The st...