The invention provides a method for realizing multichannel data collection for a card. The method provides a multi-serial-port CPU (central processing unit), at least two radio-frequency card reading chips with different channels and an information processing unit. The method is characterized in that each card transmits an information packet of a frame-band card number at intervals according to a first preset time, and the frequency for transmitting the information packet is one of the frequencies of two different channels; the radio-frequency card reading chip of each channel respectively receives the information packet transmitted by the card of the corresponding frequency and disintegrates the information packet; the multi-serial-port CPU acquires the information in the information packet from the two radio-frequency card reading chips and filters the information of multiple cards read by different channels at a second preset time interval; the information processing unit receives the filtered information corresponding to the card number through a serial port. By adopting the method, the phenomenon that reading of a card is omitted can be solved, the card reading speed and the card reading capacity can be improved, and the situation of the checking-in data loss caused by a large stream of checking-in people at a peak period can be avoided.