A fall detection-based help-seeking method, wherein the method is applied to an electronic device, wherein the electronic device is a portable electronic device that can be carried by the user, the electronic device comprises a motion sensor, the motion sensor comprises an acceleration sensor and a gyro sensor, and the method comprises: collecting, by the electronic device, a first motion parameter of a user by using the motion sensor; obtaining (S302, S303), by the electronic device, a fall confidence of the first motion parameter if the first motion parameter matches a first preset fall parameter, wherein the fall confidence of the first motion parameter is used to represent a probability that the first motion parameter is a motion parameter collected when the user falls; and sending (S304, S305), by the electronic device, help-seeking information if the fall confidence of the first motion parameter is greater than a preset confidence threshold; wherein the electronic device further comprises a heart rate sensor and a microphone, and the method further comprises: collecting, by the electronic device, heart rate information of the user by using the heart rate sensor, and collecting speech data of the user by using the microphone; if the fall confidence of the first motion parameter is less than or equal to the preset confidence threshold, determining, by the electronic device, that the microphone collects a preset moaning sound, bumping sound, or crying sound; and, if the electronic device determines that the microphone collects the preset moaning sound, bumping sound, or crying sound, sending, by the electronic device, the help-seeking information. collecting, by the electronic device, a first motion parameter of a user by using the motion sensor; obtaining (S302, S303), by the electronic device, a fall confidence of the first motion parameter if the first motion parameter matches a first preset fall parameter, wherein the fall confidence of the first motion parameter is used to represent a probability that the first motion parameter is a motion parameter collected when the user falls; and sending (S304, S305), by the electronic device, help-seeking information if the fall confidence of the first motion parameter is greater than a preset confidence threshold; wherein the electronic device further comprises a heart rate sensor and a microphone, and the method further comprises: collecting, by the electronic device, heart rate information of the user by using the heart rate sensor, and collecting speech data of the user by using the microphone; if the fall confidence of the first motion parameter is less than or equal to the preset confidence threshold, determining, by the electronic device, that the microphone collects a preset moaning sound, bumping sound, or crying sound; and, if the electronic device determines that the microphone collects the preset moaning sound, bumping sound, or crying sound, sending, by the electronic device, the help-seeking information. collecting, by the electronic device, heart rate information of the user by using the heart rate sensor, and collecting speech data of the user by using the microphone; if the fall confidence of the first motion parameter is less than or equal to the preset confidence threshold, determining, by the electronic device, that the microphone collects a preset moaning sound, bumping sound, or crying sound; and, if the electronic device determines that the microphone collects the preset moaning sound, bumping sound, or crying sound, sending, by the electronic device, the help-seeking information.