In　order　to　study　the　characteristics　of　micro-seismic　signals　in　the　static　cracking　process　of　cement,　the　micro-seismic　signals　of　the　cement　cylinder　model　in　the　static　cracking　processes　were　collected　by　a　soundless　cracking　agent　and　ZDKT-1　type　coal　or　rock　dynamic　disaster　experimental　simulation　system.　Hilbert-Huang　transform　(HHT)　was　used　to　analyze　the　microseism　signals.　The　results　show　that:　a.　The　process　of　static　cracking　could　be　divided　into　three　stages:　initial,　middle　and　late.　The　amplitudes　and　energies　of　micro-seismic　signals　in　the　static　cracking　process　did　not　change　monotonically,　but　changed　between　weak　and　strong.　b.　The　laws　of　micro-seismic　signals　in　the　static　cracking　process　of　different　strength　specimens　were　similar,　but　in　high　strength　specimens,　the　micro-seismic　signal　arose　later,　lasted　longer,　and　had　higher　amplitude　and　frequency.　c.　While　the　processes　of　static　cracking　were　long,　the　microseism　signals　were　paroxysmal　and　lasted　under　two　seconds,　with　small　amplitudes.　The　frequency　distribution　of　the　middle　stage　was　wider　than　those　of　the　initial　and　late　stages,　but　their　dominant　frequencies　were　all　lower　than　50　Hz.　©　2016,　Editorial　Department　of　JVMD.　All　right　reserved.