Downhole　engineering　parameters　such　as　weight　on　bit　(WOB),　torque　on　bit　(TOB)　and　vibration　play　a　significant　role　in　safe　and　efficient　drilling　when　operating　in　severe　geological　environment.　Monitoring　downhole　parameters　in　real-time　will　improve　drilling　safety　and　efficiency　greatly.　Traditionally,　engineering　parameters　obtained　in　the　well　site　are　based　on　data　collection　on　surface,　which　is　not　an　accurate　way　to　estimate　downhole　conditions.　In　order　to　explain　dynamical　state　and　stress　distribution　of　bottom　hole　assembly　(BHA),　a　comprehensive　suite　of　downhole　dynamic　measuring　system　(DDMS)　is　developed.　The　paper　provides　an　overview　of　the　downhole　dynamic　measuring　system　which　has　the　ability　to　measure　axial　force,　torsional　force,　annular　pressure,　internal　pressure,　vibrations　in　three　orthogonal　directions　and　annular　temperature　with　changeable　sampling　rate　as　high　as　1000　Hz.　The　measurement　of　axial　force　and　torsional　force　with　strain　sensors　is　an　intricate　issue　which　relates　to　environmental　factors,　therefore　calibration　of　strain　sensors　in　laboratory　is　included　in　this　paper.　In　the　subsequent　content,　field　trail　is　covered　to　illustrate　the　performance　of　downhole　dynamic　measuring　system.　©　2018　Computer　Society　of　the　Republic　of　China.　All　Rights　Reserved.