One　of　the　difficulties　for　the　application　of　microbial　induced　carbonate　precipitation　(MICP)　or　enzyme　induced　carbonate　precipitation　(EICP)　for　soil　treatment　is　to　ensure　uniformity　in　the　treatment　across　the　whole　soil　sample　or　soil　profile.　Methods　that　can　be　adopted　to　improve　the　uniformity　of　MICP　or　EICP　treatment　are　reviewed　and　compared.　Experimental　data　are　presented　to　demonstrate　that　a　newly　proposed　one-phase-low-pH　injection　method　enables　better　uniformity　to　be　achieved　among　different　methods.　Other　factors　affecting　the　uniformity　of　treatment　are　discussed.　Measures　to　be　adopted　to　enhance　the　uniformity　of　MICP　or　EICP　treatment　in　sand　are　suggested.　©　2023　American　Society　of　Civil　Engineers　(ASCE).　All　rights　reserved.