Before 1929, today's Mong Kok Road was part of Mong Kok Village (芒角村), which had already been charted and named in an 1866 map by the Italian missionary Simeone Volonteri, marked as Mong Kok. [2][3]
From 1900 to 1904, there was a large reclamation project off the coast of Yau Ma Tei that pushed the coastline from Reclamation Street to Ferry Street.[4] In the 1920s, the village gradually lost its land to urban construction of the Government, and by the 1930s was taken possession of by the Government and demolished. The new planned road was named in a Government Gazette on 28 Sep 1923:
''Road immediately to the south of Kowloon Inland Lots 1289, 1400, 1431 and 1420 beginning at its junction with Tong Mi Road and running in an easterly direction terminating at its junction with Depot Road [today's Sai Yee Street] ... Mong Kok Road 旺 角 道
— No. 411, Hong Kong Government Gazette, 28 September 1923, [5]
As the MTR was built in the 1970s, and some exits of the Mong Kok Station had occupied the right lanes of Argyle Street from Sai Yeung Choi Street to Portland Street, thus the government at the time had made the control in effect: vehicles can only travel westbound on Argyle Street between those two streets mentioned above. As a result, vehicles from Tai Kok Tsui via Argyle Street, eastbound towards Kowloon City, should make a left turn onto Reclamation Street and then a right onto Mong Kok Road. After crossing the junction between Mong Kok Road and Nathan Road, one shall turn right to either Sai Yeung Choi Street South or Sai Yee Street in order to lead back to Argyle Street. For the same reason, all vehicles are not allowed to make a right turn directly from Nathan Road to Argyle Street, and must follow the route described above. With a large number of buses and minivans passing through this section daily, these intersections have frequently encountered accidents and problems of traffic congestion.[11][12] There have been plans to correct this, but they are still in discussion.[13]