The present invention relates to a real estate big data analysis method for collecting and analyzing information of real estate right relationship online. The real estate big data analysis method comprises : a step of allowing a real estate big data analysis apparatus to group two or more kinds of real estate from which information on a real estate right change is desired to be extracted and store information for extracting information on real estate right relationship of the grouped kinds of real estate; a step of accessing an online site for providing information on real estate right relationship after a reference date for initiating monitoring of a right change and checking a status of processing registration applications for all the grouped kinds of real estate; a step of crawling the information on real estate right relationship with respect to the grouped kinds of real estate from a result of checking a status of processing registration application; and a step of storing newly generated information on real estate right relationship as information of a real estate right change in the grouped kinds of real estate.(S1100) Group a plurality of real estate(S1150) Set a reference date of monitoring(S1200) Access an online site and search(S1300) Crawl real estate right relationship information(S1400) Has new information generated?(S1500) Generate information of real estate right change(S1600) Does the information correspond to a risk level?(S1700) Differential warningCOPYRIGHT KIPO 2018