The present invention includes steps of loading a website project; counting a word count of keywords of the website project for obtaining a word sum of the website project; respectively counting a first anchor word count for each of the anchor types to obtain a first anchor word sum for each of the anchor types; respectively dividing each of the first anchor word sums of each of the anchor types by the word sum to obtain multiple first internal anchor type percentages of the multiple anchor types; loading multiple first default anchor type percentages; for each of the anchor types, when the first internal anchor type percentage is greater than or equal to the first default anchor type percentage, marking the first internal anchor type percentage, and displaying results to prevent over-modifying the keywords corresponding to the marked anchor type, thus keeping the website project from being blacklisted.