The invention discloses a flag-raising ascending and descending device with an automatic position-adjusting function. The flag-raising ascending and descending device with the automatic position-adjusting function comprises a main flag pole; a main flag pole top indicating ball is disposed at the top of the main flag pole; a top driven rotary gear is disposed in the position, below the main flag pole top indicating ball, of the main flag pole; a bottom driving gear is disposed in the position, under the top driven rotary gear, of the bottom of the main flag pole; the top driven rotary gear andthe bottom driving gear are sleeved with an ascending-descending transmission belt; an auxiliary flag pole sleeve ascending-descending shaft is fixedly disposed on the outer side of the ascending-descending transmission belt; an auxiliary flag pole mounting sleeve is disposed on the auxiliary flag pole sleeve ascending-descending shaft; an auxiliary flag pole is disposed inside the auxiliary flagpole mounting sleeve; and a flag is disposed at the top of the auxiliary flag pole. The flag-raising ascending and descending device with the automatic position-adjusting function has the beneficialeffects that the structure is compact, the functions are practical, the auxiliary flag pole at the bottom of the flag is kept in a force state due to the gravity all the time, the flag can be taken back without adjustment of the rotating direction after flag raising is finished, operation is simple, an adjusting handle can be connected into a handle limiting block in a clamped mode no matter in the flag-raising process or after flag raising is finished, the hands are liberated, and time and labor are saved.