Washover fishing is a kind of technology to deal with sticking and burial for the purpose of protecting the stuck drill pipe. Optimizing the process parameters of washover operation can improve the success rate of treatment of sticking and burial and reduce economic loss. With analysis and research of the drilling tool combination， drilling process parameters and process method of washover， some notes are put forward for the selection of the drilling tool size， the control requirements of RPM， WOB and ROP in the washover process， the selection and mixing ratio of drilling fluid， and the requirements on cleaning operation during drilling. Field use has proven that the technical measures have good effect on improving the success rate of washover fishing.