The invention discloses a miniature multifunctional human body posture intelligent detector and a detection method, and belongs to the field of human body posture detection. The detector comprises a posture sensing and detecting unit, an A / D converting unit, an information processing unit, a memory unit, an input unit, an output unit and a power supply unit, and is characterized in that: sensors adopted by the posture sensing and detecting unit are a horizontal accelerometer and a vertical accelerometer. The detector utilizes accelerometers as posture sensors, and provides kinematical parameters under partial motion states for examinees, wherein the motion states mainly include running, rapid walking, jumping and the like, and the parameters include running or walking frequency, kinematic velocity, jumping height and distance, and angle and speed of rising to jump. The detector can provide posture information in the maximum range for people in need of posture correction, comprises posture detection under various conditions such as relative rest, walking or taking a bus and the like of the examinees, and realizes prompt type active posture correction and good habit cultivation.