A channel occupying method, applied to a portable wireless access point, AP, apparatus comprising an internal access point AP and an internal station STA, wherein the method comprises: configuring channel occupying periods in the internal AP in advance, each of the channel occupying periods comprises a first period, and the first period comprises an AP occupying channel period, and the method further comprises: when the internal AP detects a starting end of the AP occupying channel period, occupying a channel alone in the AP occupying channel period to perform data transmission, wherein the internal AP is connected to at least one external STA (105, 106, 107), and the method further comprises: configuring channel occupying periods in the internal STA and the external STA in advance, wherein each of the channel occupying periods comprises the first period, and the first period further comprises a contention period; and when the internal STA and the external STA detect a starting end of the contention period, adopting a distributed coordination function DCF method in contention for a channel to perform data transmission in the contention period; wherein the method for configuring the channel occupying periods in the internal STA and the external STA comprises: setting a duration of the AP occupying channel period and a duration of the contention period according to the number of external STAs (105, 106, 107), wherein when the number of external STAs is one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 1:1; and when the number of external STAs is greater than one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 3:2. configuring channel occupying periods in the internal AP in advance, each of the channel occupying periods comprises a first period, and the first period comprises an AP occupying channel period, and the method further comprises: when the internal AP detects a starting end of the AP occupying channel period, occupying a channel alone in the AP occupying channel period to perform data transmission, wherein the internal AP is connected to at least one external STA (105, 106, 107), and the method further comprises: configuring channel occupying periods in the internal STA and the external STA in advance, wherein each of the channel occupying periods comprises the first period, and the first period further comprises a contention period; and when the internal STA and the external STA detect a starting end of the contention period, adopting a distributed coordination function DCF method in contention for a channel to perform data transmission in the contention period; wherein the method for configuring the channel occupying periods in the internal STA and the external STA comprises: setting a duration of the AP occupying channel period and a duration of the contention period according to the number of external STAs (105, 106, 107), wherein when the number of external STAs is one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 1:1; and when the number of external STAs is greater than one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 3:2. when the internal AP detects a starting end of the AP occupying channel period, occupying a channel alone in the AP occupying channel period to perform data transmission, wherein the internal AP is connected to at least one external STA (105, 106, 107), and the method further comprises: configuring channel occupying periods in the internal STA and the external STA in advance, wherein each of the channel occupying periods comprises the first period, and the first period further comprises a contention period; and when the internal STA and the external STA detect a starting end of the contention period, adopting a distributed coordination function DCF method in contention for a channel to perform data transmission in the contention period; wherein the method for configuring the channel occupying periods in the internal STA and the external STA comprises: setting a duration of the AP occupying channel period and a duration of the contention period according to the number of external STAs (105, 106, 107), wherein when the number of external STAs is one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 1:1; and when the number of external STAs is greater than one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 3:2. configuring channel occupying periods in the internal STA and the external STA in advance, wherein each of the channel occupying periods comprises the first period, and the first period further comprises a contention period; and when the internal STA and the external STA detect a starting end of the contention period, adopting a distributed coordination function DCF method in contention for a channel to perform data transmission in the contention period; wherein the method for configuring the channel occupying periods in the internal STA and the external STA comprises: setting a duration of the AP occupying channel period and a duration of the contention period according to the number of external STAs (105, 106, 107), wherein when the number of external STAs is one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 1:1; and when the number of external STAs is greater than one, a ratio of the duration of the AP occupying channel period to the duration of the contention period is 3:2.