This study aims to develop a creative behavior assessment scale with stratified behavior indexes. After interviewing twelve high creative performance and eight normal creative performance R&D engineers in the electronic industry, the study collected their overt and inner behaviors that could enhance problem solving at work. From a content analysis of interview transcript, the creative behavior assessment scale was formed in three dimensions: work attitude, domain knowledge, and innovative thinking. Each dimension consists of five levels, every level includes two to four behavior indexes, with a total of forty-five behavior indexes. The result of reliability and validity examination reached the acceptable level. It is concluded that the creative behavior assessment scale can effectively assess creative behavior of R&D engineer of electronics industry, and also can detect the relationship between high and low level creative behaviors.