In order to increase the offshore drilling efficiency， avoid the effect of the waves and tides on traditional spindle-type drill， low core recovery and safe risk， the portable drilling rig was tried to be used on the offshore platform rely on the second submarine tunnel survey project of Jiaozhou Bay， Qingdao. Different types of platforms commonly used on the sea were introduced and the drilling and coring implementation solutions of portable drilling rig on offshore fixed platforms and floating platforms were put forward. A wave compensation wire-line drilling and coring solution for portable drilling rig in floating platform was explored. With this solution， the drilling task was completed efficiently and safely. The proposed solution can provide reference and are benefit to marine engineering exploration.