A supporting apparatus includes a base member, a securing assembly secured to the base member, and a supporting assembly secured to the securing assembly. The supporting assembly includes a slid-way module and a bracket. The bracket is secured to the slid-way module and supports a monitor. The slid-way module includes a main body and an adjusting member. The main body includes two guiding ways and a sliding portion. The sliding portion is slidably engaged between the two guiding ways. The adjusting member includes a holding portion located between the sliding portion and the two guiding way, a resilient piece, and a controlling portion rotatably installed on the holding portion. The resilient piece is located between the holding portion and the controlling portion. The controlling portion is rotatable to deform the resilient piece to adjust friction force between the holding portion and the two guiding ways.