INTRODUCTION: SUCCESS IN OPEN AND INTERACTIVE SPORTS REQUIRES THE USE OF SPECIALIZED TOOLS TO IDENTIFY TECHNIQUES, TACTICS AND ANALYSIS IN THE TRAINING SESSIONS. IF OBSERVATIONAL METHODOLOGY HAS A VALID TOOL WITH ACCEPTABLE VALIDITY AND RELIABILITY WOULD BE ABLE TO COLLECT DATA DIRECTLY AND ACCURATELY IN THE PRACTICE AND THE RACE. IN THE FIRST STUDY, PALRAJ AND COLLEAGUES (2012), DESIGN A DIGITAL SYSTEM FOR ANALYZING KABADDI EVENTS AND ONLY HAVE INTRODUCED SCORING INDICES AS PERFORMANCE INDICATORS. THIS WOULD HAVE HIDDEN OTHER ATTACK AND DEFENSIVE PLAYER’S BEHAVIOR FOR COACH. BUT THE CURRENT RESEARCH AIMED TO DESIGNING TOOL TO IDENTIFY OFFENSIVE AND DEFENSIVE BEHAVIORS IN KABADDI.METHODOLOGY: 4 TEAM MEN AND WOMEN (8 TEAMS) OF SEMIFINALS KABADDI TOURNAMENT SOUTH KOREA INCHEON ASIAN GAMES 2014 FOR THE IMPLEMENTATION OF THIS STUDY WERE SELECTED. ACCORDING TO SPECIFIC TAXONOMY OF OBSERVATIONAL STUDIES IN SPORTS SCIENCE, FEATURES OF THIS TOOL WERE INCLUDED PLURALITY, FOLLOW UP AND MULTIDIMENSIONAL. A LIST OF THE OFFENSIVE BEHAVIORS INCLUDE TOUCHING BY HAND, TOES, LEG, KICKING AND GETTING BONUS POINT AND THE DEFENSIVE BEHAVIORS INCLUDE HOLDING ANKLE, THIGH, KNEE, WAIST AND BUST, BLOCK AND CHAINING WAS EXTRACTED BY THE RESEARCHERS. THUS THE EXHAUSTIVENESS AND MUTUAL EXHAUSTIVENESS BETWEEN THEM BY 3 KABADDI COACH AND PLAYERS WITH NATIONAL AND INTERNATIONAL EXPERIENCE DURING 3 SESSIONS WATCHING PROFESSIONAL KABADDI GAMES WERE CONFIRMED. OF 32 BASIC ITEMS, 3 ITEMS WERE CORRECTED AND 4 ITEMS BECAUSE OF NOT BEING COMPREHENSIVE WERE DELETED. FINALLY, 28 BEHAVIORS WERE IDENTIFIED OFFENSIVE AND DEFENSIVE. THE FINAL VERSION WAS PRESENTED TO 10 EXPERIENCED COACHES AND TEACHERS IN ORDER TO DETERMINE THE CONTENT VALIDITY. THEY COMMENT ON QUALITY OF EACH ITEM BY THE WORDS "RIGHT", "SOMEWHAT GOOD" AND "BAD". THEN INTRA AND INTER RATER WERE USED BY TWO EXPERIENCED PEOPLE FOR DETERMINING THE RELIABILITY. THEY WERE INITIALLY UNDER AN 8-HOUR PRACTICE AND COORDINATION. THEN BOTH OF THEM RATED ONE OF MATCHES FOR INTER RATED METHOD, WITHIN 2 WEEKS. TWO GAMES OF MEN RACE AND TWO GAMES OF WOMEN RACE WERE RATED BY THEM, IN THE INTRA RATED METHOD.RESULTS: THE CONTENT VALIDITY INDEX WAS 0.99 FOR BOTH DEFENSE AND OFFENSIVE BEHAVIORS THAT IN THE SIGNIFICANT LEVEL OF P<0.05 THE VALIDITY OF THIS TOOL WAS CONFIRMED. COHEN'S KAPPA WAS USED TO VERIFY THE RELIABILITY OF THE RESULTS OF THAT FOR BEHAVIOR OFFENSIVE AND DEFENSIVE WERE 0.78 AND 0.75 RESPECTIVELY.DISCUSSION: THIS OBSERVATIONAL TOOL WAS SAMPLING EVENT-BASED DOCUMENT THAT WILL HELP TO ACHIEVE THE STUDY OF NUMBER, INTENSITY AND DURATION OF BEHAVIOR. THE STRENGTH POINT OF THIS STUDY IS TRAINING OBSERVERS TO ENHANCE THE COORDINATION OF THE JUDGMENT. IN SPORTS BECAUSE CONDITIONS VARIED FROM ONE OBSERVATION TO ANOTHER, THE TEST- RETEST ISN’T SUITABLE METHOD TO CONDUCT THE RELIABILITY OF THE OBSERVATIONAL TOOL. THUS, THE BEST WAY TO RELIABILITY IN OBSERVATIONAL METHOD IS INTER RATER RELIABILITY. A HIGH LEVEL OF INTER-RATER RELIABILITY ALSO REPRESENTS A DETAILED DESCRIPTION OF THE BEHAVIOR OF OFFENSIVE AND DEFENSIVE BEHAVIORS AND ACCURACY IN THE WAY THE EVENT WAS RECORDED. THE CURRENT OBSERVATIONAL STUDY HAD HIGH POWER TO COLLECT, MANAGE AND ANALYZE DATA BY CAREFULLY DEFINING THE SKILLS AND EXERCISE VARIABLES OF KABADDI.