The　polymerization　was　found　quite　stable　by　using　two-stage　monomer　dropping　method　to　prepare　polyacrylate　micro-latexes　compared　to　the　batch　feeding　and　monomer　pre-emulsification　method.　When　the　pre-adding　fraction　of　monomer　was　less　than　30%,　the　polymerization　could　be　carried　out　stably　and　a　final　micro-latex　with　65%　transparency　was　obtained.　When　the　fraction　of　polyacrylate　in　micro-latex　prepared　was　over　34%,　the　micro-latexes　appeared　gelatiniform.　Latex　shearing　with　ammonia　was　investigated.　It　was　found　that　a　micro-latex　with　both　better　transparency　(~65%)　and　lower　viscosity　(~220　cp)　could　be　obtained　when　adding　appropriate　amount　of　ammonia　during　shearing.　As　a　result,　a　micro-latex　with　small　particles　size　(~63　nm)　and　narrow　size　distribution　(1.17)　was　prepared　by　combining　emulsion　polymerization　with　two-stage　monomer　dropping　and　latex　shearing　in　the　presence　of　ammonia,　which　contained　32%　polymer　and　only　1.2%　emulsifier.