Chapter 1 On the Optimum Mass Ratios of Multi-Stage Rocket §1.1 On the optimum mass ratios of multi-stage rocket(Ⅰ) §1.2 On the optimum mass ratios of multi-stage rocket(Ⅱ) §1.3 On the optimum mass ratios of multi-stage rocket(Ⅲ) Chapter 2 Some Other Problems of Multi-Stage Rocket §2.1 The velocity limit for a multi-stage rocket with unbounded propellant mass §2.2 The velocity limit for multi-stage rocket with bounded propellant mass §2.3 Optimal ignition order for a multi-stage rocket of parallel connection style §2.4 The plan of the largest characteristic velocity(PLCV)for a multi-stage rocket §2.5 The plan of the least propellant mass(PLPM) for a multi-stage rocket §2.6 PTCV and PTPM ?.7 Varying law of the largest velocity of a two-stage rocket §2.8 General varying law of the largest velocity of three-stage rocket when W2≤W3 §2.9 General varying law of the largest velocity of three-stage rocket(when W2>W3)and general multi-stage rocket Chapter 3 Theory of Rocket Motion in Special Relativity §3.1 The comparison of Ackeret's formula and Tyiolkovsky's formula §3.2 Expression of the velocity for multi-stage rocket in the special relativity §3.3 Relation between VN and #N for a multi-stage rockets §3.4 An application of the relation between VN and #N References