diff --git a/README.md b/README.md
index 7ad7c42..0129599 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,12 @@ Grounded SAM 2 does not introduce significant methodological changes compared to
 
 ## Installation
 
+Install PyTorch environment first. We use `python=3.10`, as well as `torch >= 2.3.1`, `torchvision>=0.18.1` and `cuda-12.1` in our environment to run this demo. Please follow the instructions [here](https://pytorch.org/get-started/locally/) to install both PyTorch and TorchVision dependencies. Installing both PyTorch and TorchVision with CUDA support is strongly recommended. You can easily install the latest version of PyTorch as follows:
+
+```bash
+pip3 install torch torchvision torchaudio
+```
+
 Since we need the CUDA compilation environment to compile the `Deformable Attention` operator used in Grounding DINO, we need to check whether the CUDA environment variables have been set correctly (which you can refer to [Grounding DINO Installation](https://github.com/IDEA-Research/GroundingDINO?tab=readme-ov-file#hammer_and_wrench-install) for more details). You can set the environment variable manually as follows if you want to build a local GPU environment for Grounding DINO to run Grounded SAM 2:
 
 ```bash